Brawl+ is pretty cool, but I would never play it competitively over melee. In my mind it's a "Brawl but fun" mod.
Kinda plays like a drastically less-technical version of melee; every aerial auto cancels basically, it still has the forgiving ledge physics and easy grapple recoveries. you can dash dance :D. the bit of hit stun and faster falling speed make some combos possible. honestly if you have brawl it's worth getting, even just for casual play, because its pretty well-polished. also, the ability to add your own music is pretty sick.