I am thinking 2 things.
1, FFG should consider making applications for either Iphone or android or both (though in the long run android will likely become the most popular due to all the free google stuff it can do- not to mention a very open system)
Applications could be:
FFG quick rulebook -one big rulebook for each game (dark heresy+rogue+deathw ex) search pdf or ibook docs with one or all books for keywords (this would cost $ ofc)
Crit tables with automatic rolls, quick npc creation ex (could be iser designed or for sale)
Update widget, see whats going on on FFG and FFG forums with a widget?
2, Some place on this forum where people could post their own apps, provided they are relevant.
Weather it be dice apps, quick draw apps, dungon tips or a navigator tol that can help calculate the travel time between one sector and another (or interplanatery) or any one of many many other possible things. - - in short tools that we as players and GM´s have made to assist us in the games.