Honestly, FFXIV doesn't feel like a game designed around split-second decisions, so I personally don't see the need to change these abilities. I think players should work within the constraints of a system instead of wanting the system to be changed to fit what they think it should be. These abilities may be your "oh shit" buttons, but that doesn't mean that they should be used that way.
For a comparison:
- Brutal Swing is intended as an interrupt, so it was very bad that it took so long to activate.
- Overpower was there to get hate on groups, it's long animation caused enemies to be out of range when it finally hit.
If these abilities aren't fast, their main effects are wasted.
Then we have the abilities you want changed:
- Benediction fully heals the target.
- Hallowed Ground makes you invulnerable for 10 seconds.
- Holmgang doesn't let you die for 6 seconds.
The main effect of all of these abilities is "long" lasting, so in my opinion they are pre-emptive abilities, not reactive abilities, and should be used as such. You're basically asking to make game-changing abilities (well, Holmgang is iffy imo) to be even more powerful. If you want these abilities to be instant their effects need to be greatly toned down.
