A lot of the spawn was wrong. It was using the wrong TYPE of Earth Elemental, Air Elemental, ect. There is a much stronger version of all of those that was supposed to have been spawned in Shame. They were not spawned or only 1 or two spawned in the whole dungeon. The new type drops the crystals, the old type did not. That is why it seemed like you were getting less crystals, they simply were not dropping off of the old monsters.
This has since been rectified, on both Trammel and Felucca facets. That being said you will notice it is slightly harder down there now. A few missing mini bosses were also added.
Taken from UO
https://uo.com/wiki/ultima-online-wiki/world/dungeons/dungeon-shame/
"The usual Scorpion can still be found here and there but the first residents you meet will be the diminutive Mud Pies and
apparently familiar Earth Elementals, treat these last with a little respect,
they are not as feeble as those you may have become used to fighting under this name."
"you may meet an odd
air elemental or, further on, a poison elemental, but this narrow corridor can also often be found empty.
Do not underestimate these creatures, they are much stronger than those of the same name met elsewhere"
