Now...
There are new weapons and weapon styles, but no secret flags and related secret combos? It would be vital to have Spin flags, Cross beam flags and such, similar to the current Burn flags, Sword flags, etc.
For example the hammer could be a separate page with four options: Hammer, Charged Hammer, Quake Hammer and Super Quake Hammer.
I believe these wouldn't cause bugs or not too many.
The "Secret flag editor" and the "Secret combo editor" can come after the stable 2.5.