Ok so you want more then a player. You do extensive edits. That's all good. So now let's not talk BIAB let's talk Real Band. In RB you could take your note for note as you call them SMFs and import to RB. You can do a lot of editing right here. There are many parts within a song of the type you are doing that are nothing special. This is were Real Tracks can make your tunes really stand out. The same with Real Drums. I've played this music since I was 12 and I'm now 58 so I've done it a fair amount as well. You need to do the hooks, the stops etc. that make that song recognizable for what it is. If all you did was replace the crappy midi rhythm guitar players with Real Tracks & did Real Drums you'd pee your pants.
RB also has a juke box and you can do scrolling lyrics and a chord sheet.
BTW I used a Roland MC50II for many years. JV module, Alesis d4, strummer all the crap. I'm 100% RB.

John
ESI Gigaport HD+
Lenovo Turion II /4 Gig Ram/ Win7x64 be
15.6" Monitor
"The only Band is a Real Band"
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