The only thing from PvP that should be brought over to PvE are the skill consolidations that should have been in place since the launch of Stormblood. It's completely ass backwards how they claimed they were reducing button bloat, yet still had numerous cases of needless bloat.

Dreadwyrm Trance + Deathflare
Summon Bahamut + Enkindle Bahamut
Leylines + Between the Lines
Enochian being a trait and not a needless button press - you lose access to everything when you drop AF/UI anyway

The list goes on. How can they justify having Nastrond replacing Geirskogul, yet leave shit like this in?