I was in the same boat as you in regards to looking for a good alliance server to level a new alt. Since I’ve been on Tarren Mill I wanted to play on a smaller server for a change. I went to stormwind on probably 20 different servers seeing which one were connected on gamepidia so I didn’t accidentally go to two servers that are connected. I decided on Kilrogg because the server gave me nostalgia with the simple reason that people actually had conversations in tradechat. I can’t remember the last time that people spoke with each other in tradechat on Tarren Mill.And a few days ago, Blizz announced they would connect the server with Arathor/Hellfire so it will probably become a high pop server which I don’t really mind but I just hope the server keeps it friendly vibe.