When I say "new" Bonk, it's new to the Turbo, but not necessarily a brand new game(though I do have plans for a true brand new Bonk that are coming along nicely).  Basically, I want to put every unique Bonk game that never made it to the Turbo, on the Turbo!  I want all the GB's, the SNES's, & the arcade, all in modified form for improvement, on the Turbo!  I recall the first 2 GB Bonk's feeling more like the Turbo Bonk's compared to the SNES ones.  So, if/when they would be converted, not much would change, other then graphical upgrades, & fast spinning.  The SNES ones, for one thing, I want them to play like Bonk 2 but with faster spinning.  Also, the music, especially in SB1, I would make sound more like Bonk music.  Bonk music relies alot on rhythm & basslines, the first SNES game does not do this at all, atleast, not in the right direction.  There's a few goofy songs that would stay the same.  Also, alot of the sounds from the Turbo Bonks, I'd want in SB1, like the tube sound in Bonk 3 for instance.  Also, I want to brighten the gfx, the game is too dark for a Bonk game!
In regards to SB2, the only place I recall where you play thru a level with things telling you how to play the game, is the training level which is totally optional, you can skip that level & play the real game!  I'd still want to make some gameplay enhancements to it though.