Most of the characters are written well enough to not be bad, except for one of the most important characters: the "hero" who kicked the main character out of the party.
The hero's other party members... it's a mixed bag. The tank is neutral, since he's not really given enough panel space to give him a recognizable personality.
The monk/punch monkey girl is as obnoxious as the "hero".
The mage girl... honestly, there were and are some really interesting things being done with her, but the execution in writing her is a bit lacking.
The MC and holy maiden's replacements are actually okay in terms of writing.
The world building is okay, if a bit lacking.
The real issue is how the main character, despite being intelligent (emotionally, strategicly and intellectually), can't see the "hero" for being the horrible person he really is, and that constantly has to be brought up, which is a weird thing to do.
This story tries so hard to make the MC feel like a dad to the hero party, but in trying to do so, creates a dissonance that strains or breaks suspension of disbelief.
I can't decide if it's worth recommending, because the good elements are undermined by the bad ones.