I'm just going to throw something out there that I've thrown out there so much over the last 8 or 9 months that it hardly sticks to the wall anymore.
DCC really, really needs one or a few "variant" ability score options for (a) creating characters that are higher than 0-level and (b) generates stats in a way that isn't 3d6 in order that doesn't violate the premises upon which DCC is built. This needs to be in an appendix or something.
abk's original suggestion is as good as any I've seen. I don't care for 4d6, drop the lowest, because - IME - it creates the kind of stat-bloated PCs that I'd rather avoid. I agree with hamakto about 4e -- throwing in my hat for the inevitable edition ragnarok, I guess.
I'd rather not have DCC be a game solely focused on making sure you get a +2 bonus in a primary ability score. And I'd also rather have an option that carries the blessing of Joseph and Harley than have to do a forum search for a trillion options whose side effects on play aren't apparent until the damage is done -- so to speak.
I like you idea. Which I why I like the roll 3d6 in order multiple times (i.e. 2,3, or 4 sets of scores). Pick the best set of scores (i.e. similar to a funnel method).
Yes, you will actually get character with better stats then going through a funnel (random chance the best guy bites it). But you still do not violate the ability score curve that the game is based on. All you are doing is avoiding the starting 'funnel'.