Alright i have decided to write a more lengthy post on the matter.
There are quite a few reasons i think this is a terrible idea;
First off you complain about attendance and how it is hindering 25 man progression yet if we compare this tier to last tier even we eventually killed 3 heroic mode bosses by the time 5.2 came out. This time we are 9/12 on 25 man normal mode and a leshen kill is looking to happen before 5.3 even comes out. Id say that were doing well
The lack of raiding guilds benifits us much more then it hinders us. If you look at 25 man guilds there is basically reckless, us and DND. Reckless is hardcore and thats for some people but not others and DnD is well DnD, So we fill a pretty good gap of people who want to raid 25 man but not have a full hardcore attitude to it. If we transfer to a higher population server that has 20+ guilds already into heroic mode content i fell like we would just get washed away. Why join this guild when there are alot more that preform better then it? Because of the family enviroment.
And on that. I could apply and get into much more progressed guilds but the reason i dont is because i do not care about progression as much as i do about this raid enviroment. I love raiding with you guys because its raiding with you guys. Everyones personalities and even the fails make it raiding with ATR. No matter how you look at it transfering the guild will not be for everyone. That means some people will be left behind and if alot of people get left behind then its not going to be the same raiding family that ive grown to love.
TL;DR Transfering would not help our guilds problems it would only create more of them