E2M9 replacements?

I know of several E1M1 replacement maps already, but I was wondering if there are custom maps out there that specifically replace E2M9 "Fortress of Mystery"? If not, is there a way to reassign a custom level to replace this map in particular?

I never particularly liked E2M9 - as it is very short and not challenging at all - and I think "The Shores of Hell" deserves a better secret map than that.

Thanks in advance!

https://www.doomworld.com/idgames/levels/doom/g-i/hex-e2m9

This one is interesting in that it's a "fair competition" to the original map (same number of vertices, lines and things as E2M9).

Anything else?

You can remap any map to any map slot by editing its ExMy entry-the easiest way is probably through an editor.

Create an "Megawad of Mystery" community project and you'll get a load of great 3-room levels with hordes of Barons and Cacodemons. Soooo minimalistic.
JUST KIDDING, DON'T

_{unless you hate it really too much}

Shameless self-promotion: https://www.doomworld.com/idgames/levels/doom/v-z/wase2

Oh yeah, I think I remember this map from TWiD: Lost Episodes.

Thanks a lot for pointing me out to a standalone version!