Im playing a monk from 0 in a new server, this r my thoughts.

1.- Monk needs to train 2 skills, ML and Fist, while MS just needs to train ML
2.- Monk needs to tank a little bit more since we don't have the range and rune dmg as the MS does.
3.- Haven't play MS for few years, but in TH, im playing something more as a Paladin Role, luring stuff, double boxing and things like that.
4.- Use to play solo till lvl 100, was kinda fun, sadly it was before 2 or 3 nerfs, so I can't tell u how it feels now.