"Compatible" does not mean "balanced". Those words have never meant the same thing.
Elven Accuracy is an example of something that has always been busted. No surprises that it's busted in 2024. It's a bad design. They should not have made it that way in the first place. The fact that it's had such a persistent position for charop since the day it was printed is a symptom of the problem.
Booming Blade and Green Flame Blade should be brought into line with the design of True Strike 2024, Thorn Whip, or Primal Savagery. That is, they should be melee spell attacks.
I was explicitly assured, by
several people, in a thread perhaps a year ago at most, that "compatible" literally did mean just making extremely small tweaks (of the tune "you get feature A at level 3, not level 2" or similar--bookkeeping tweaks, nothing more) in order to directly use
all options from 5.0 in 5.5. Moreover, that it would make no difference whatsoever that some people used options from 5.0, and others used options from 5.5, and a few might even use a mixture of options from either one, without issue.
Is it your position that this is not the case, nor has it ever
been the case? That, in fact, "compatible" actually means, and has
always meant, "you must review each not-yet-translated option with a fine-toothed comb", because there could easily be significant problems due to failing to take into account rules differences?
Because it would be
exceedingly useful to me if I could cite this as being not only the
current understanding, but that it was
always the understanding that "compatibility" between 5.0 and 5.5e merely meant that you wouldn't have to ground-up rebuilding, but would still need to carefully review for the possibility of game-harming consequences. That would, in fact, be something I would eagerly accept and run with--should you really mean what it seems you are saying here.
