Huh. That's a change from my other two posts that no one replied to. Now I've derailed a thread!
When you strike a chord with this community, you will spark discussion.
owever an exchange rate of 5 MP to 1 XP is pretty bad, since for that same MP I can HALPMEH and be no more than 1 mana from a BURNDAYRAZ
You don't use WONAFYT instead of a useful combat glyph. You use it instead of wasting mana on overflow when exploring. You spam it repeatedly to summon monsters, which you then leave for easy kills later. That can give you a reserve of 10-20 XP that you can collect whenever you want. If you have a monster you're actively fighting, this is not the time to use WONAFYT.
Normally I convert WONAFYT once I reach level 2, and only use it in my early exploration before I've even started fighting. The moment I'm doing a serious take-down of a higher-level monster it hits the conversion bin.
Avatar's got the idea on WEYTWUT though; it's a Swiss army knife of a glyph, but all the blades are a little rusty and the guy behind the counter still wants to charge me more than a new one because it's "vintage." Although the poor man's ENDISWAL could even sometimes being a poor man's PISORF, an even cheaper glyph.
WEYTWUT is interesting because it does things that no other glyph can do, so at a certain point its price doesn't matter; if you want the effect, you have to pay for it. It is very much a swiss army knife, with a high cost keeping its power in check.
I don't know what the answer is, and I feel that reducing its MP cost by 1 is probably the only thing that satisfies the "less radical" approach the devs are currently taking to balance. It also might be interesting if it got the same treatment as IMAWAL and were allowed to target an empty tile and allow you to teleport there without a monster to trade places with, but I don't know if that would add or take away from the flavor of the glyph.
As for WEYTWUT in general, the link provided by boooooze puts it right:
As I explore, I kill higher level monsters and collect lower level ones. At this point I have almost half the map quietly awaiting execution. The whole thing is just so wrong. I am the real monster in this story.
Veterans are in control of the dungeons, each monster is not a foe but a potential resource awaiting harvest. We are the predators, they the prey, and WEYTWUT/WONAFYT is the equivalent of fattening them up.