I've dorked around with him a bit. He's got some really great shit (mid-screen EX machine gun upper -> dash -> Ultra2 is simultaneously holy shit awesome and holy shit hard), but I'm frustrated by his strings and the fact that I can't stop playing the bastard exactly like I play Guile.
In other words, zoning with long-range high priority normals (st.MK, st.HK, cr.MK), dull cr.LP, cr.LP, cr.MP xx whatever strings, regularly tossing out LP air slasher and chasing for basic pressure and zoning, baiting jump-ins to beat with either EX upkick or standing close MP. Basically, zoning and defense and then mixing in his silly j.MK ambiguous cross-up gimmick, which Guile sort of has too w/ j.LK, although not nearly as good.
The strategy works at the most basic level, it's just boring. Makes me want to give up playing any more charge characters. I'm sure there are better ways to play him, but I'm not familiar with how he was played in Super Turbo and don't know of anything better.