That's a good question. If they really didn't want to reduce the gaps, I only ever really use F1, F4, F10 and F12 these days (my keyboard these days doesn't even feature the ridge I used to use to perch the f-key reference on). So merging F2/3 with a modifiter key would be fine for me. Alternately, since they're only using the FN key for that F11/12 combo that means they added a key (FN) so they could remove one (a dedicated F11). I've not really looked up yet what they could stick down there to free up space up top though, so that might be an argument that ignores the dimensions of the product.