But, while u study brokerage you admin skills rust, so why so easy to float and keep all abilities? An mma fighter who goes and studied sorcery in the library should lose some of the beefy hp or other fighting prowess
They did. Whatever sorcerer levels they took, they got d6 HP instead of d10. Those levels are also a separate path to their next ASI or feat. I’m not sure what more you think they should cost but, to get all real-worldy about it, there are plenty of well-educated athletes out there. It is very common for high level athletes to have completed university and to pursue careers related to their academics following their retirement from athletics.
I've met plenty of PhDs that can win a bar fight. Allowing for multiclassing has plenty of costs that don't particularly exist IRL.
Exactly. Quite often what makes a person a good athlete helps to make them a good student too. Also, people are capable of a lot of different skills and pursue a lot of different interests. Even those with the most demanding careers and professional lives tend to have at least one hobby or outside pursuit for the sake of their sanity. Why do we imagine D&D characters as limited to one narrow thing?
Strict observation of class labels is so needlessly restrictive IMHO. Aside from the jarring combo of labels, what is so conceptually wrong with a rogue/paladin? I imagine someone who learned some devious skills but was never really interested in a life of crime or experienced a change of heart putting those skills to to work for good now instead. There are white hat hackers and security specialists that do that sort of thing in the modern age. What is so difficult to imagine about a D&D equivalent?
Exactly. Quite often what makes a person a good athlete helps to make them a good student too. Also, people are capable of a lot of different skills and pursue a lot of different interests. Even those with the most demanding careers and professional lives tend to have at least one hobby or outside pursuit for the sake of their sanity. Why do we imagine D&D characters as limited to one narrow thing?
Strict observation of class labels is so needlessly restrictive IMHO. Aside from the jarring combo of labels, what is so conceptually wrong with a rogue/paladin? I imagine someone who learned some devious skills but was never really interested in a life of crime or experienced a change of heart putting those skills to to work for good now instead. There are white hat hackers and security specialists that do that sort of thing in the modern age. What is so difficult to imagine about a D&D equivalent?
You should allow multiclassing as it give player characters more flexibility in their development.