As many have pointed out, having to spend half your combat time just holding down a button until a heavy attack goes off is totally lame and boring. Part of the reason is that ZOS didn't take the time to program it so PARTIAL heavy attacks restore partial resources.
This is also a problem for other abilities like warden heals where it is an "all or nothing" investment. If you let go of the button just a split second too soon, holding it down for 1.9 seconds instead of 2 seconds, you get NOTHING. This is a bad design and why people say the changes were lazy. It forces you into a "hold it and wait" play style where you just stand there with one button held down for what feels like FOREVER, as even the slightest bit of lag could cost you that entire wasted windup.
ZOS should program these heavy attack effects to grant partial benefit based on how long they are held, much like damage.
Edited by Phinix1 on May 29, 2017 7:30PM
[POLL] Why sustain changes suck: Lazy design and solution. 58 votes
Yes, partial heavy attacks should grant partial effects.
No, holding down a button and waiting for lag is "skilled play."