Since elite skills can't be recharged with the improvisation anymore, what about bringing some updates to the least used ones.
If you look at the impact strike, it is clearly a PvP oriented skill, which is balanced around high risk/high reward ratio since it can insta-kill people. However, if you look at it and compare to other abilities it becomes a questionable value.
First of all it is a 3 strike chain skill, which require you to hit every single step in order to get access to the next one.
How about bringing some additional value to each chain-strike?
1st strike can be unblockable, its damage is quite low, and the daze there just to prevent enemy from reacting with the counter-pressure.
2nd strike can boon thief with quickness on successful hit, since it is a knockdown, and its range is melee
3rd strike can transfer a condition(s)/remove boons on hit. Think of you already stomping a downed enemy, a single shared aegis or blind will nulify all the combo you were performing which meant to be high risk/high reward.
OR damage on 3rd part can be reconsidered a bit, or even reworked into, for example, insta-kill ppl which less than 10-15% hp, because as said above, it is a melee skill as a last part of combo, which already incredibly hard to land on moving targets.
I like impact strike and would love to use it, if thief had a single competitive choice but dagger storm