First of all, Aeria can't sort the game out without Redduck's approval. Either that or Redduck could do it for themselves but UAVA is pretty much meaningless to them.
1: There are already some balances on the way. Besides, if you hate try-hards with easy guns, get used to it. It's how most of the community plays and will always play.
2: I got to agree on that but it has always been bad since ijji days. Seems like they ported ijji's server onto Aeria without checking for issues.
3: Redduck ain't going to change that besides giving us Sniper only maps that are meant only for Sniper and Handguns (lol). Besides not giving us an option to set Sniper only on every other map, Sniping is quite easy. Most snipers one-hit kill to chest and head and if not, the enemy was wearing armor or it's a server problem (Tag).
Relating to your first post, ASW doesn't need a nerf, it simply needs to be for higher ranks. While they won't change it, you can pick it up, since it's pretty much like a FR that tags slightly more and is silenced.
4: M16A2 Snow Leopard is a community made gun and there are probably more on the way. Aeria has already announced, on some thread, that they could take our community made guns into the game. (If you want, grab a gun from AVA and Photoshop it. Search for the topic and post there. You can get free vouchers.)
5: The servers are being worked on constantly. Although the disconnects could've been fixed a long time ago, it only seems they're bringing the fix on the next update. But fear not, as the servers are going to get better, I hope.