Maybe it's just me and this is an unpopular opinion, but I don't understand why Bungie focused so much on Finishers.
I mean, the first week of Shadowkeep I used them like everyone else, but then I've found myself use them less often and right now I'm not using them at all. I see no purpose or advantage to use them, expecially now that I've reached a Power around 950 I can basically stomp almost everything just with my guns like I've always did before...
I know that there is a specific Mod that allows to obtain Heavy Ammos with a Finisher, which is pretty cool, but it costs like 7 Energy Slots and I can think many ways to use them in a better way with other Mods.
I don't know, maybe it's just me, but I feel like that Final Blows wasn't a really good idea, they sound like, you know, something cool but actually not really usefull.