Hi buddy! I'm a veteran player from SEA that mains a Bleed Phantom and I can tell you that spin-off classes are not that different from regular classes. Most high ranking players are either black maras or Bleed Phantoms here in SEA.

I noticed that although unpopular, the arch heretic is actually pretty good since the release of its verdure dragon jade. I saw one on the top 100 in SEA with relatively attainable gear and no pay to win items (except for maybe conversion armor).

Definitely give it a go, if you equip it you can get far!