All of the things you're describing are social issues that occur all the time to thousands of players and, for better or worse, are just a natural consequence of human interaction over time. Groups are going to fall apart. People are going to stop playing or start playing on different servers. Guilds are going to poach members. There's nothing blizzard can do to force people to not do those things, especially with a game the size of WoW. Starting a new character at this point in wow's history is absolutely trivial. There are people who got characters from 0 to 85 faster than I got my main from 80 to 85. If you don't like where you are, start over. If you are absolutely in love with your character, then pay the $25.
Any e-mail offer like that would go out to hundreds if not thousands of players and it's a $165 value. I can't fathom why you think blizzard (or any company) would ever make such a generous offer to entice people back to the game, especially in its current state, in which they plainly do not need to make desperate attempts to get people playing.
Blizzard designs the game. It doesn't, and shouldn't be expected to, control the people playing it, especially insofar as guild drama goes or having your friends transfer off server. They very aggressively try to reduce load on overpopulated servers by offering free transfers and they do the same with unbalanced servers by offering free transfers of one faction to another server with the opposite imbalance. I don't know what else you expect them to do, and if you expect them to hand out 11 months subscription value to a bunch of people just because, I think you're being pretty unrealistic.
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