Pretty decent server, had a bad experience with the first guild as the owner refused to allow members helping each other leveling up then I switched to a better guild, very friendly and ok members. So far the GM Staff tickets response time is between 12-24h.
The things I didn’t like about the server so fast:
– Toxic global chat people
– Horde players always win battlegrounds
– Horde has more advantage due to racial passives and abilities
– My favourite trinket item “Orb of Deception” doesn’t work (which is a simple c++ script fix that can be ported from any mangos/cmangos source)
– Frequently lag spikes and I confirm that my guild members encountered them too
– No chance of doing Sunwell or Black Temple due to minimum gear score requirement which is very hard to achieve if you can’t raid
– Only weekends battlegrounds since everyone is gone to work/school in the business days
– No crossfaction battlegrounds to balance the PvP
– Low honor rate (as alliance is a pain in the ass to earn honor points in battleground since we are weaker)
– Disenchanting doesn’t skill up enchanting

Your pets don’t even follow you properly. Mobs that aren’t supposed to be there until further progression, are there and conflicting with the mobs in previous versions. Avoid Avoid

I highly recommend Endless as the TBC Private Server you’re searching for.
Endless includes decent scripting. High population, and a fair community. A big 5 star for me!