PvP now with the spell changes and new mode is much better than it used to be but in my personal opinion there is still a lot of progress to be done.
I think that as it is, the gameplay doesn't feel as good as it can be and it can be improved with very minor changes. My suggestions are that the HP needs to be raised a bit and recup should be a cooldown and maybe have 2 charges if one isn't enough. This is so people don't keep spamming heals to survive but also more HP so you don't get one shot casually. The other thing is the CC (crowd control). There is simply too much of it and it is very oppressive. Remove many of the CC and increase the cooldown of purify so you end up with fewer CC but more impactful.
My reasoning for these changes is so that people can actually play their characters. As it is now you might go from getting booped, to pulled, to stunned by one person, into another stun etc and it's not fun. It's also not fun when you are on the offensive and someone keeps healing and running. in general I'm not a big fun of the gameplay being this fast when it comes to its combat outside of ults. I think pvp needs to be more methodical and less mash the buttons fast.
There are almost 0 things that I'd want ff14 to copy from other games since it does its own thing and it does it well but for pvp they need to take a look at wow imho.