A possible solution would be to add a Section within the wiki called "Not bulbous but taken for it" (of course not in these dumb terms!) and move there all the genera with pictures, info, etc. that are misleadingly in the bulb wiki. This way you will not need to put the wiki upside down, the move can be a gradual process and the info will be accurate for good. And a lot of interesting plants can be added there without altering the sense of PBS. No problems with corms, tubers and bulbs, the tangle is when rhizomes as a whole are regarded as "bulbous". It is in this group that all the problems appear.