Nostalrius Begins - Quality wow vanilla realm (1.12)

I got a level 37 warrior and hear that there are way too many warriors on the server. I also like the idea of rolling a holy priest since they seem almost as fun as tanking and you can actually find a guild that way.

It's much harder to find a tank than a healer at 60. If your concern is finding a guild and doing pve content, there's always room for both tanks and healers. Finding pugs for 5mans is also much easier as a tank since not a lot of people want to do it.

Raiding guilds are not looking for tanks. Reroll a healer if you want to get into a non-shit raiding guild.

Yeah, warrior and rogue are the top 2 classes on the server, population-wise. While it may be easier to get into 5mans as a tank, healers are more in demand for raids.