i've had the perfect scenario brewing in my head for a while:
in re:1, while scouring the spencer mansion, chris redfield and rebecca chambers stumble upon some stocks and chris decides to give them a test run if you know what i mean. hey, all that stuuf goin on in the mansion, he needs to take his mind of things for a bit.....
as for ada wong in re:2, how bout william birkin's wife (whatever her name is) captures ada wong thinking she's an umbrella spy (well she is, sort of) coming to steal the g-virus. and she interrigates her on how much she already knows about it's location, and/or just to get back at umbrella somehow.