A think to keep in mind, though there are turns, the characters and opponents arent like chess pieces. 'No no no after you my dear Orc, Oho you have skirted round me clever' doesnt happen as witty repartee, also one melee attack roll doesnt necesarily mean one swing in 6 seconds, it means one chance between parrying and slashing to land a telling blow.
Relating to explaining how a grapple isnt automatically wall to wall crits incoming is easy, a grapple may be a grip on the shield arm or shield, the sword swings in from the other side, you step in closer and grab the wrist, struggle and slide to the side, inside the swing hooking their legs with yours. (etc etc, the grapple is constant the point of contact is not. Restraining something requires a feat or a monsters 'I hit and automatically grapple and restrain, on your turn you can spend an action / melee attack to try and break free.' Importantly for dnd5e by the book, something could be grappled by 6 people, restrained by two giant octopus and prone and could still cast any spell they wanted without a chance of losing it (I suspect because it would penalise casters too much now the number of spells they can cast per day has been dramatically reduced)
Also to escape a grapple or restraint it would be easier to use an ability which forces involuntary movement, any involuntary movement such as an eldritch bolt with the repelling invocation, or thunderwave will break a grapple or restraint automatically if a grappler is affected.
House rule as you like, but granting automatic hits for grapples or restrained individuals may result in unintended moon druid population explosions. 'Summon the guards! Giant constrictor snakes are everywhere!!!'
I would argue that, in the case of a touch spell, the requirement for the spell that requires a roll, the touch, is already met, therefore you would be able to do immediate damage, although i do realize there should be some complication, but in that case you could just require a constitution check instead of an attack roll at disadvantage. But since casting a touch spell normally (i.e. without being grappled/restrained by another creature) the attack roll is to touch the target, therefore I would argue that an attack roll against a target you are already in contact with would not be necessary.
I would argue that, in the case of a touch spell, the requirement for the spell that requires a roll, the touch, is already met, therefore you would be able to do immediate damage, although i do realize there should be some complication, but in that case you could just require a constitution check instead of an attack roll at disadvantage. But since casting a touch spell normally (i.e. without being grappled/restrained by another creature) the attack roll is to touch the target, therefore I would argue that an attack roll against a target you are already in contact with would not be necessary.
If grappling / being grappled was making touch spell effect automatically hit or fail saving throw it would say so.
A DM can certainly rule it this way though, or give (dis)advantage, if it doesn't want the roll to be made normal.
A think to keep in mind, though there are turns, the characters and opponents arent like chess pieces. 'No no no after you my dear Orc, Oho you have skirted round me clever' doesnt happen as witty repartee, also one melee attack roll doesnt necesarily mean one swing in 6 seconds, it means one chance between parrying and slashing to land a telling blow.
Relating to explaining how a grapple isnt automatically wall to wall crits incoming is easy, a grapple may be a grip on the shield arm or shield, the sword swings in from the other side, you step in closer and grab the wrist, struggle and slide to the side, inside the swing hooking their legs with yours. (etc etc, the grapple is constant the point of contact is not. Restraining something requires a feat or a monsters 'I hit and automatically grapple and restrain, on your turn you can spend an action / melee attack to try and break free.' Importantly for dnd5e by the book, something could be grappled by 6 people, restrained by two giant octopus and prone and could still cast any spell they wanted without a chance of losing it (I suspect because it would penalise casters too much now the number of spells they can cast per day has been dramatically reduced)
Also to escape a grapple or restraint it would be easier to use an ability which forces involuntary movement, any involuntary movement such as an eldritch bolt with the repelling invocation, or thunderwave will break a grapple or restraint automatically if a grappler is affected.
House rule as you like, but granting automatic hits for grapples or restrained individuals may result in unintended moon druid population explosions. 'Summon the guards! Giant constrictor snakes are everywhere!!!'
I would argue that, in the case of a touch spell, the requirement for the spell that requires a roll, the touch, is already met, therefore you would be able to do immediate damage, although i do realize there should be some complication, but in that case you could just require a constitution check instead of an attack roll at disadvantage. But since casting a touch spell normally (i.e. without being grappled/restrained by another creature) the attack roll is to touch the target, therefore I would argue that an attack roll against a target you are already in contact with would not be necessary.
If grappling / being grappled was making touch spell effect automatically hit or fail saving throw it would say so.
A DM can certainly rule it this way though, or give (dis)advantage, if it doesn't want the roll to be made normal.
Okay, but does Shocking Grasp on a grappled enemy deal damage to the user as well?
The spell does not say this...so no.