Title. Would you rather...
1. Heal kits stay more of less as simple as they are but their damage kits/party buffs get put back to HW/SB levels of complexity/interaction (not copy/paste those expac's but roughly that many damage buttons/interactions). Stuff like a tiny AoE that buff's people's damage, SCH getting its dots back, AST cards going back to how they were in SB, Aero 3 coming back. etc
2. Damage kits stay as they are (30 sec dot, one button spam), but their healing abilities are made significantly more complex. No more "press one button to heal everyone to full". More unique interactions, passives, cooldowns etc. Stuff like a CD where everyone's HP in an area is averaged out, a debuff on the boss heals anyone when they attack the boss, AoE heals cost way more MP/are on a cooldown. etc.
And yes, a mix of 1 and 2 is absolutely allowed and frankly, that's my preference.