Hey, would be great to hear feedback for the following few feats. Sofar there was no problem in my games with them, but you never know :D

Thrown Weapon Specialist

• When you make a ranged attack with a thrown weapon you can treat them as ammunition for the purpose of drawing and attacking.
• Attacking at long range doesn't impose disadvantage on your ranged weapon attack rolls with thrown weapons.
• Being within 5 feet of a hostile creature doensn't impose disadvantage on your ranged attack rolls made with thrown weapons.
• When you use the attack action and attack with a thrown weapon, you can use a bonus action to attack with a thrown weapon. If you have the two-weapon fighting style you can add your ability modfier to the damage roll.

Advanced Dexterity Weapon Training
Prerequisite: Dexterity 15 or higher

• Increase your Dexterity Score by 1, to a maximum of 20.
• You learn proficiency with the following weapons: Nodachi (1d10, finesse, heavy, two-handed, 100gp), | Kusarigama (1d8, finesse, reach, two-handed, 50gp).
• While fighting with a Spear two-handed, that weapon counts as having the finesse property for you.

Gladiator
Fighting for an audience is your forte, and you maximize the use of more exotic weapons to show off your prowess. You gain the following benefits:

• Increase your Charisma score by 1, to a maximum of 20.
• You gain proficiency in Performance.
• You gain proficiency with nets, and when you use the Attack action and attack with a net, you can use a bonus action to attack with a one-handed weapon you are holding. Being within 5 feet of a hostile creature doesn't impose disadvantage on your attack rolls with a net, and the escape DC for your nets increases by your proficiency bonus.
• You gain proficiency with tridents, and you can roll one additional weapon damage die when determining the extra damage for a critical hit with a trident.

Cartographer
You have studied the methods and techniques of mapmaking. You gain the following benefits:

• Increase your Intelligence score by 1, to a maximum of 20.
• You gain proficiency with cartographer’s and navigator’s tools. If you are already proficient with them, you add double your proficiency bonus to checks you make with them.
• You can easily and accurately understand maps, even those written in a language you can't read.
• Even when you are drawing a map while traveling, you remain alert to danger.
• Maps that you draw can be easily understood by any creature that shares a language with you, and a creature possessing such a map cannot become lost within the area the map displays if it can unederstand it. You must have cartographer’s tools to use this benefit.
• You cannot become lost except by magical means, and always know which way is north. You must have navigator’s tools to use this benefit.