Yes, I've implement the compression on Megaman X! Now if you edit the layout of levels or edit compress tiles, you can save and re-compress them. I think that the big work was done and now I have only tod find a way (this will be easy :P) to reallocate compress data. The compressor of Level Layout work perfectly and the GFX compressor compress the tiles but the result take more space than the original :\ for example the original compressed tiles of Highway Stage is 14.031 bytes and mine is 15.900. I know how to fix this, I need of some minutes only.
YEAH, Blue Highway Stage XD
NEWS: Now my compressed tiles are 14.031, equal to the original size =3