i bought a month game time (i stopped playing n went back to US servers before even finish using my game time ) on taiwan n leveled to max, i can confidently tell u taiwanese WoW server has really really low amount of players, even my taiwanese friend plays on US server - frostmourne (it is now an oceanic server located in australia)

If u like social interaction and want to enjoy the game content (raid, battlegrounds, arena, etc ) then taiwanese WoW server is not for you.

On TW servers there is just no one to play with , meaning u cannot raid ( requires 20man minimum). Raiding with friends is the only part of WoW content i fully enjoy and the only reason for me to play WoW.  With such small player pool, there is just no player to choose from and u are forced to stick with bad players meaning no progression which leads to having less fun, and more frustration. Its a vicious cycle.

My opinion ? Avoid TW, it is a total waste of time if u want to play WoW. Just play on US since in WoD they finally decide to give us oceanic realms located in australia. Basically every single South east asia player plays on US-Oceanic realms.