Oh, they buffed AST in FL!

[Mawlzy]

I think the other way to think about it is how much kills are worth proportionally to assists.

If currently 1 kill = 5 assists.
Under new changes 1 kill = 2 assists.

That's quite a big a change.
I personally thought they needed to buff assists slightly because BH gain on "support" jobs was slow, maybe 1 kill = 3/4 assists; but I didn't think they needed to nerf the Battle High gain from kills.

Are they saying that 1 kill is now worth less BH than before? Why is that? Is it easier to gain kills than before? Is this to balance the new incoming role actions that we don't know everything about?

Pretty sure just based on typical burst damage that however it shakes out it'll mean that BH5 grows faster. Like any death that includes one or more assists now gives more BH points total to the aggressing team. So the only situation in which less BH is awarded is for solo kills, which I think are relatively rare.