DPS display could easily be solved with a system already in game.

[loldrg]

Tanks have it harder , since u cant go afk or lazy mode (well in some encounters u can , nearly all the primals are 1 tank only now

A fight being solo tanked means there's actually less margin for laziness or errors. Titan, Ramuh, Shiva are all likely wipes if the tank makes a mistake leading to their death.

The last 'lazy' fight for tanks was Titan Hard Mode or Labyrinth.