Having to atttune each new raiding member significantly harmed raiding in TBC, guilds just did not have the time to attune new members to Black Temple, all they did instead was simply poach already attuned members from lesser progressed guild, and guilds cannibalised each other to the point th...
You’ll be fine to transfer to Dreamscythe, there are several guilds doing ony and MC, lots of ubrs for attunement, people are doing ST, Scholo, Strat (both L/D), plenty of princess farmers and BRD runs (emp runs, arena spam, attune, and angerforge) so for end-game you’ll have...