The skeleton fest on the streets made me remember bone chapels and since these places give more inspiration than just a pile of bones I decided to include some additional ideas. If these decorative items are implemented I will be glad, if not, I can do without these. Let's put this part aside for a moment. And, yes decoration should be crafted from regular and dark bones.
Now, talking about liches, even if these will never, ever drop anything rare, they can still be abused to bully noobs seeking to use the hookah and still will not serve the purpose, because one can always use a 0-scalp alt to do the risky part defeating the idea. Besides the crypt portal is nearby and since mobs would not follow through the portal it is easy to escape.
Regarding dock club totem I do not see how this would prevent using noob chars or sneaking in during the less crowdy hours - like 8 a.m. UTC. Who would be keeping the guard 24/7 ? It would also equally endanger and scare those seeking to put skeletons back inside.
If the fear debuff is not enough then go for quetzl poison.
The additional goal you missed is to provide a reward for bringing a skeleton inside the crypt. Remember how it used to be a common practice in crafter workshops that the new guy does the cleaning tasks. The reward should be attractive for newbies but not so much for mid level players. It must be balanced so it would be not profitable to put a skeleton in and out repeatedly. There should be a cooldown timer with some random variation, which runs only outside the crypt to enable the reward.