I really can't see why it would be a lot harder to find endgame groups as the main complaint is that unless you are level 60 it's unplayable. Imo (at least on horde) it's a shortage on tanks even tho the latest chart I've seen said there's 26% warriors on this server... 'muh fury!!11' much... Maybe we should just tell warriors that strictly don't want to tank to fck off form groups of 5 fury warriors if it's so great.
That being said out of the 9 friends of us only 3 remain and made it to lv 60. The others couldn't take it and called it quits until Blizzard servers come up. The mount issue didn't make it better.
Personally I enjoy the server so far.. The corpse camping is a bit intense at times tho and definitely wasn't that bad back in the day... Shit is being abused hard. Yes, that's abuse of poor game design and not immense skill..