Absolutely love the new game mode, along with the rework to how PvP plays across the board. However, I do despise the fact that PvP in general just limits playing in any pre-made group. Crystal Conflict is the biggest offender at the moment, as it's currently locked to solo que for both casual and ranked. And while not as limiting as CC, Frontlines also suffer from this same issue as you can only que in with a maximum group size of 4, despite alliance groups allowing up to 8 players.
The general argument I see from players is them echoing the developers opinion that this is a good decision as it helps prevent full stacks of pre-made groups from destroying solo players who aren't coordinating as hard. While while I do think making the game not a landslide defeat against coordinated groups, completely removing the capability to be able to que into any content in a pre-made is not the solution.
A more simple solution that benefits both sides would be to create a solo que and a group que for both ranked and casual, just like they did with the Feast. The only reason I can think they didn't bring that same system over to CC was because they feared for the population would be too small after the initial hype of PvP died down. So maybe they'll add that back in after they see the positive reception that PvP has at the moment. And as for Frontlines, simply bumping up the number of pre-made players from 4 to 8 will just help much more than before, and you still wouldn't have as much as a landslide victory as having control of the entire team.
Honestly, I just hope for any change that would allow me to play with my friends, as allowing people to que into PvP as a pre-made just benefits the enjoyment of everyone in the long run. It currently feels terrible to have to not be able to bring friends along to try out the new PvP changes when the game limits us with the que limits currently.