To jump right into it, myself and my shard-mates feel that our shard is very overpopulated and competitive. It's not as bad as that one fleet shard that got split, but it's bad, and we were hoping that something could possibly be done, or at minimum have it be looked at similar to what was done for that fleet shard. Upon Revan's initial release, people who had him were falling into the 100s at times, we had Revan up to the 300-400 range on the first release of him. I personally have to start my climb from around 100-150 from ending at #2 every day.
We once had someone with the triumvirate when it was still new and shiny quit the game, they were over rank 1000 within 4 days of inactivity, with a new meta team. Someone else only doing 5 battles a day in our shard because he gave up is sitting in the 400s now because he stopped spending 2-3 hours daily doing arena battles.
We've lost a lot pf people, some of them big spenders on our shard recently, and it always sucks to see people go, but even with that, it still feels like it's only getting worse, for every person that quits it feels like 2-3 more take their place. With the second release of Revan I honestly don't even know how far back he goes in regards to rank.
We talk to many other people in our guild and other guilds and compare the activity of their shard compared to ours. Their older shards (which you'd think would have more meta teams) are super, super tame and they barely have to try to even keep top 50, while we are fighting for our life to not drop to 100 overnight, it is really ruining the fun of the game for a lot of people, having to spend hours upon hours grinding up in ranks and then dropping tons of crystals just to refresh to continue the climb. It's turning into more of a chore than it is a game for a lot of us.
Anyways, hopefully this can be investigated. If you need any more info feel free to ask or PM me.