Reincing in and out of (full) triads is needlessly difficult.
1. Having to haul your mummies into vaults ( and then back once joining and
having built tombs) is a big chore as mummies are heavy and you can't carry
many at a time.
2. Having to rebuild your swamp slowly by relearning everything and building
the rooms you need and spending big amounts of materials is another chore.

It would be nice if reincing in and out of triad would not be that much of a
hassle. I think it would be great to have a new kind of structure which would
allow you to:
1) save your swamp structures
2) save your mummies in swamp
and as an added bonus, but i could live without this to be honest:
3) save your herbs, slaads and other productions etc whatnot

I understand that building this structure could be costly, and it could
require some exp investment ( ie to cover the lack of research costs) and it
could require completing the story and maybe doing some special task.

I understand that old retirees blocking viable swamps might be a problem, and
maybe your swamps could only survive a year and a day without your presence or
some other silly symbolic time period( rl time, not mudyear) before they get
removed.

I also understand that theology% might affect your swampsize and your guild
seniority or doctrines can affect that %. Maybe some basic ( including
carographer) 26 rooms or whatever the "basic" amount is could be saved so
there is still some but only a few rooms worth of growth in every reinc.

++glaurung