Is it possible? Would someone be able to make it? Without changing any other skill moves?
I think it would make dragon fights (I use Deadlier Dragons) much more satisfying!

Would likely be possible (but beyond my means as a modder, methinks.) I just wish it wasn't the one type of death animation linked to your weapon, put a variety of applicable moves with your favorite weapon.

Not sure about this.

I haven't bothered to study it properly in-game, but I suspect kill moves only happen when you critical-hit someone and they die due to that hit.

Now, in FO3 I think there were perks that increased crit % chance versus certain enemy types, but I'm not sure and a lot of stuff that would have been easy to keep from FO3 the just got rid of if they weren't still using it.

*looks for kill-move controller thingy in CK*

Here what I found:

fCombatKillMoveDamageMult
fKillMoveMaxDuration

VARKillMove → var type; Short; 1 ; Constant
VARKillMoveRandom → var type; Float; 50.000; Constant

Variables I don't quite understand.

Doesn't seem like there's anything that controls how often it will occur.

There are several mods that increase killmoves effectively. I've tried both "working Killmove " and killmove plus" and they do work wonderfully but Dragon killmoves have not seemed to increase much if any in either although I get tons more with everything else. I have no idea of the actual functions though. There may be another variable at work.