Since I've got nothing to lose (hey, I know you guys already know the stuff that I know :D, but let me try to answer your question.)
My fighting style, I'll say luck dependent. I still can't figure out the styles (or how to do a certain style) to counter an opps style. My current motto is "If it hits, it hits. If not try again." So my style will be probably a spam of the same moves (juggle, then 1-3 oki moves, repeat). But I try to predict how the opp will stand up and execute the move that will most likely hit when he stood that way.
For tricks, I once can't do the sword sweep before (specially after a 3,3) and I usually end up with just a crouching jab. Then I found this, after the opp was tripped by the last hit of the 3,3, I usually press the d/f immediately and press 1 only when yoshi's head bobs (yoshi will try to get up after the 3,3 but will immediately crouch again because of the d/f, making his head bob or bounce a little)
For juggles, my favorite (well, the only variation I know :D) is the u/f+3,f+1,b+1,1,1,f+3 or the (f+2),d/f+2,b+1,1,1,1,1,f+3. I sometimes use the 1,2,1,3,3,3,4,4,4,4 string after the d/f+2. Right now, I was experimenting on anti quick roll juggles (unfortunately, the PS2 I borrowed was already taken by the owner:(). I think my trip to the arcades will be more frequent from now on.
Well, that's all I know (at least those that I spam often on fights). I hope you found something of interest in there (if ever there's any). I'll post more to this thread if I find anything else to add.