Hi Zero. I am happy to see someone take the initiative to help improve the PvP system in this game. I made a similar thread almost a year ago and these were the results: http://forum.square-enix.com/ffxiv/t...-Long-Term-PvP Although it is a little outdated, it is interesting to see that Square has in fact implemented many of the requests listed there, as well as mentioned implementing the other items later on.
Yoshida has made it pretty clear that he wants more involvement in frontline so that players get a sense for PvP and improve their skills before introducing more Wolves Den content, which makes perfect sense. That is why I would personally like to see more variety in terms of game modes for frontline to get players interested.
Frontlines
In my opinion, the game needs a Capture the Flag frontline of 8vs8. Yes, 8vs8. Not 8vs8vs8. This frontline keeps it to the classical CTF rules between two teams that most players are familiar with. How it's handled would be up to Yoshida's plan of keeping or removing GC restrictions. Keeping the GC restriction would simply have matches between two of the GCs, leaving the third GC out of the current match. But, if they do want increased pvp participation, the GC restriction should be removed entirely. CTF introduces a fun new mode enjoyable by many players and gives tanks a bigger purpose in PvP as potential flag carriers.
Wolves Den
Once the PvP playerbase has increased, then it makes sense to work on Wolves Den. I agree entirely with a seasonal MMR system, as competition generally increases participation. As far as 8vs8 arena, this does seem quite large for teams, and I personally liked the 4vs4 system. In terms of ranked play, having all 8 of your team members online at the same time seems like it would be a challenge in itself and might cause very few teams to queue, but teams of 4 might still be the sweet spot and allow for quicker queues.