I love the "filling up my wardrobe" part. I am having fun playing the healer (you also deal damage, honestly feels like healing the part time job). It is very casual friendly and also solo player friendly. You won't do many dungeons before hitting max level. It is a bit grindy but that's a given with most MMOs. Not paying for the monthly subscription feels bad tbh but its playable without. You will have to play twinks sooner though because your energy for going dungeons runs out faster.

The costumes are very slutty and expensive but if it does not bug you to see half naked people run around you can just ignore those. Plenty of free armor pieces that you can combine like you want at any point (after level 10? but you gotta collect some first anyways)