It's not really a big deal for me to nothave the keycaps all the ame profile. If you replaced the entire F-row (which is the uncommon Row5 height, also found on the kinesis thumbkeys) with "normal" keycaps It wouldn't be that bad at all.
Such a thing bothers some people more than others. I know of some that only purchase full kets of keycaps. Others re-arrange QWERTY-profile keycaps to Dvorak (giving it the iconic "Earthquake" look).
If it's really a problem for you, I am sure you can sell it for most of what you paid and buy the new keycool (or noppoo) instead (or another keyboard, whatever).