It sounds like a great idea, but I bet Van has done the math....
The thing is, even using Van's price estimator, the -3B slow build is not "cheap" - you're still looking at a pretty good investment before you're done - it's not like you're getting a $25,000 airplane, ready to fly (now THAT would be cool!). QB adds a pretty good chunk of change, just to the wings. If Van had to amortize the costs of re-deigning it to be prepunched, it would cost what the two-place kits do to build, I bet.
Just to give folks perspective, we laid the longerons on our fuselage jig in late November, and here it is, the first of March, with all the skins clecoed in place - a couple weeks of dimpling/deburing and riveting, and we could theoretically flip the canoe. That includes several weeks with both Louise and I out of town on trips and vacations, workign evenings only when Louise isn't up at work, and at least one Shuttle mission where it didn't get touched.
Granted, we've got building experience (QB before) and years of airplane maintenance/mod time - but this whole "build it from raw aluminum and drill all your own holes" stuff is new. Not for a newbie, but for someone with building experience, it is just about the perfect "next kit" - challenging and rewarding.
Oh yeah - and the QB wings are sitting in our garage, finished - wings are boring...