it's not probably going to be a secret for too long because of all the pwnage I've been doing, at least I figure according to my own overinflated exuberance... but
I don't see how any other AP on TT can top Fiddle. maybe it's just me but it seems he has all the right tools for most match ups to deliver the Ap damage in all the right places.
To me he's the AP king of TT. If I could try and capture all of it into one solid statement it's that his situational reversing ability in 3 v 3 is incredible and it even starts with level 1 team fights, where his crows decimate.
Additionally he can start jungling at level 2 with decent clearing time. After fights he can stay on lane with ease ,healing right back up.
I thumbs upped your list because it takes effort, but I personally don't like using any of the terms from rift to describe any role in TT. To me TT is a 3 v 3 map where the lanes are only incidentally required for an objective. CSing is for the foolish, and it's all about pushing, pressure and controlling your half of the map, minimum--and preferably theirs whenever you need to flip the altar, or gank.
To me all 3 team mates are the same role, and it's about controlling and dominating the map. Kills come with the territory and free farming/pushing from that effort.
Anyhow, that's my 2 cents for Fiddle's schtick