As you pass a certain age your mental stats diminish, going beyond that, all stats get worse. So does this mean that as an immortal lich these stats will degrade to a point where it becomes difficult to perform tasks or will their be caps placed to stop this from happening? Kind of defeats the point if you end up being an immortal doddering old fool.
My second question is this, will their be a feature with liches that age past the phase of where a normal character would die where they become more and more skeletal in appearance? When I think of a lich what always comes to mind is a skeletal mage of immense power that used its magic to defy death, not a permanently old man. I understand this game doesn't have to adhere completely to the identity of the creature, but it would add nice flavor to the personal lore of those characters. Also while having the downside of people knowing you are a lich, it could be balanced in that, you have access to additional talents such as the ability to magically disguise yourself for a set amount of time. This way you can do your shopping in peace before skulking back to your dusty book filled lair.
My third question is, liches when they die teleport back to their phylactery, so when travelling overseas is this still the case instead of permadeath? If so, than crewing ships with liches, though I understand that could be hard to do if they are rare, would be very advantageous if the rewards for maritime travel are great. This could be really interesting as well as it would essentially be a ghost ship crewed by the undead. Is there going to be a set distance from the phylactery where it no longer functions in keeping your from dying or is distance set to be unlimited and you just have to travel farther to get back to where you went?
When you die, will you teleport back to your phylactery naked or will you have all of your gear on you? On one hand it makes sense that its the soul inside the phylactery re-manifesting your default physical form and not your stuff. But on the other hand my poor loots. Regardless I know if this is the case people will use death to just efficiently store the loot they have in the secure area where the phylactery is.
Just the rambling thoughts of a (as-of-yet) non-lichlike object.