Alison - totally agree! all bags should have light colored or fun patterened interior lining!! i think origionally the dark lining is so you dont see how gross and dirty your bag gets but WHATEVER i need to find stuff!!
also for the 'descrete' place - dont most bags have a little inside zipper place? thats where i usually hide mine - and keep it zipped!
one thing i learned from Barbara Walters on one of her shows a long time ago (yes i never thought i would type that sentance) is to keep all the little stuff, like make up, or one for pens and a notepad, in a little 'interior' bag with a zipper so when you change purses you are just moving the little bag and your wallet and keys! easy! plus then you dont need a zillion pockets..
maybe they need to make more little interior bags that then coordinate with a number of exterior bags? oooh anyone make purses? write that one down! hehehe