I think some people are just getting bored of the game in general. Every game will do that to you if you play for years..putting ladders in, buffing ranged, having glitchy map areas, whatever..you will still get bored because you played it for years already. Take a break, do a stupid build that makes you totally underpowered, sell all looms, roleplay some stupid theme in a clan..
Personally I think the game is fun as hell but can still be improved without going backwards. I don't want people glitching maps, don't want OP ranged pew pew classes ruling servers, don't want people hiding on buildings with ladders. Do want harder cav, harder (yet rewarding) ranged etc. I don't think any of the recent melee nerfed were bad..I like that pole stagger is gone eventhough I am high level polearm. I have addapted to turn speed nerf. I think it had a good impact on mauler spammers and adds a little more skill to landing turning hits
I am quite apprehensive over the multi changes, think it could result in less team work (less reward for simply winning the round). I like that support damage is rewarded though
Shields are still a bit dumb. Need some more player skill when it comes to defending with a shield, less forcefield for melee hits etc