The problem with "Instant OFF GCD" abilities makes combat feel less rewarding.

[Blimbeard]

Or maybe you're missing the point, since a SE rep has even posted in this very thread telling you that your perception of how these abilities should work is INCORRECT and does not fall in line with their design.

The problem is you're just too hard headed to accept that and want it to work exactly how you want it to, instead of simply adjusting to it and bettering yourself to handle these situations that are giving you trouble.

The problem lies with you, not with the design of the game.

Sorry but that's just nonsense. It's completely counterintuitive. Say a boss ability has a 2 second cast, you're saying is that it's actually supposed to be a .75 second cast time.

If visual cues like cast timers and aoe indicators are not actually accurate, then why even include them? You can't be seriously suggesting that encounter mechanics are actually designed to be tuned towards integrating substandard reponsiveness,and that this is an acceptable approach?