Wrong thread?
This rom doesn't have that, in fact you will be hard pressed to find much Virgin branding at all.
I thought about it, and would but AOSP isn't very loaded down, but more importantly there isn't a great working 2.3 to work from. AOSP is the only place to start and it has issues (work in progress). I'm not releasing a rom that runs that way with no hope of me fixing it.
IF they release 2.3 for this phone before I upgrade, I will do a build of it, or if someone gets GB running 100%, but not before.
I believe that is what the supplicant scan interval is (scan rate) and as you probably know, that doesn't do anything in the build prop.
There is a menu setting to disable that feature entirely (wifi settings/network notification) and there are apps that will switch you to wifi based on location. Supposedly these work well.
Will this kill your signal entirely? I have no idea.