[quote=@VedranTheII]
It helps to be a little more specific. His more hidden gripes tend to be:
- weapons he can’t picture in his head how they work (Yang's bracelets for instance aren’t a weapon he’s fond of since those straight up use hammer space.);
- grimm related semblances (controlling or harnessing their power in any way,shape or form);
- grimm made weapons (cannon heavily implies their bones and limbs disintegrate over time when severed from the main body); 
- ports (made a knuckles the echidna oc once, most liked it, he didn’t);

Outside of that, as long as you don’t make your character a Sue, you should be fine.
[/quote]

Excuse me? Ember Celica are one of the EASIEST weapons for me to map out, if you recall I used the basic concept for one of my characters weapons.