In any case, I fear that decisions like these will make people not want to use your language. The "give the programmer more power" part is actually not what I quote that quote for, it's the "don't treat your users like they're stupid" part.
It also is a sort of attitudinal for nouns too, although it doesn't change. -a nouns are things from the past or associated with it, like a museum. -u is something like a time machine
@CᴏɴᴏʀO'Bʀɪᴇɴ For each verb I iterated through all possible words and if the first two letters matched or the first letter of the verb cyclically transliterated from a-z to bcdghjklmnprtv matched the first letter of the word I added it to a lst. I then randomly choosed from the list at the end