Reasons why using original sprites is bad:
1. Unoriginal
2. Move limits
3. Different size (tiles in JJ2 are 32x32, tiles in SGBA1&2 are 22x22)
4. Not much characters (only those who appear in Jazz2 or GBA Sonic games)

And here's another one I made, standing Jazz (I used my second server since the other one can't open right now):
http://www.loricentral.com/hosted/js...zzJVSstand.gif