Was wondering if y'all had an opinion if readers tend to favor good motive OC's over bad motive OC's. What makes a more interesting read? I have seen some really enjoyable characters, like Sunflower by Hoopy McGee, and then I've seen some stinkers, and of course there are always the Mary Sue / Gary Stu effect...

My OC, Tempest, has a wonderful childhood, before everything suddenly goes sideways on her, as her mom is suddenly banished to the Moon, and she kind of missed the whole Nightmare Moon thing, so she blames Celestia of course... She eventually gets banished herself (to the other side of the planet) and gets wrapped up in a whole lotta bad, only to return for revenge/ and to free her mom (Luna) from what must be mind control by her Tyrant sister...

Wondering if that is too Mary Sue-ish?