Tried it out, its def fun. not been in the actual game for about 2 weeks due to lack of motivation and rl crap but I could see myself spending several hours kicking ass as a behemoth lol.
I think this will be especially appealing to the more casual playerbase (and as a fun sidetrack from grinding delve for hardcores lol). Overall a well structured (and unique!) system that is familiar enough to the playerbase (battlewise) but still feels fresh and fun, coz that's what a game should be lol.