I'll let people decide on this, however, my personal view is that the majority of people won't bother, and those who do probably are smart enough to figure that different firmwares' flash0 files aren't meant to be mixed (though you may want to do it).
There's always your signature if you feel the need to advertise your firmware version.

Other reasons:
- wee're not as dumb as -hacks
- too much PSP focus (though yes, wee do focus on PSP a bit here)
- too much bloat already on the left pane...