Add ability to make Fighting, Shooting and Notice rolls to front page of character sheet. And/Or, allow each character weapon listing to specify a skill to use for attacking, and specific modifiers to the attack for that weapon.
Just figured that out after I started writing an extension to do it. Neither my players nor I noticed it. Still nice to have the base skills there, just in case.
Think this will need a level of configuration to be "use-able for all". E,g, Deadlands players will want Grit, Some settings encourage some skills more than others.
In fact the only obviously "always needed" skill is probably Notice.
If configurable at the GM level, it could be overridden with an extension (similar to DLR config), but it wouldn't allow player specific configuration (possibly a good thing ?).
To be configurable at a player level, we'd need to add some interface to allow the player to choose which skills get displayed there - not an easy thing given skills are on a different tab to the main page, so it can't use a simple drag and drop. Dragging and dropping onto a "drop target" on the skills page, which then adds them to the quick bar on the front might work.
Final thoughts there is "aren't we replicating the hotkey bar ?" although admittedly these links will be "live" unlike hotkey drops than can go stale (e.g. they don't track skill dice or bonus changes)
It's nice not to have to "setup" the skill (i.e. untrained) before it is usable, especially for the campaign-specific skills. (i.e. Notice, Common Knowledge, Guts, Grit)
I'd go with a mini sheet, before I tried to make a customizable interface. It's just too complex to build a customizable interface and users will get confused. In fact, the more I think about it, the better I like it. Create a "rolls" mini sheet with attribute and skill rolls, and then weapon rolls with ammo moved from other mini.
Phantomwhale, on a related note to what you just mentioned, I've been thinking that it would be useful to "redefine" the hot key drops for rolls; so that hot keys actually point to the character and the roll on the character, instead of a static roll. I haven't tackled this for 3.5E and 4E yet, so not sure what the hurdles will be yet.