I still strongly dislike the fact that his name isn't in latin but otherwise it's actually a pretty good obverse. Similar to GVI colonial portrait.
I've thought the GVI crowned portrait to be a bit top heavy but it's grown on me, and IMO the CIII crowned portrait is even more balanced.
Now the real question is whether or not they'll actually use it anywhere. Belize currently uses coinage with the crowned colonial portrait of EII, so in theory they may actually adopt the crowned CIII obverse. It's unlikely though, I think. We'll see. Also would be interesting to see if anywhere goes against the grain and does use CAROLVS as opposed to CHARLES in the legends.