Based on your stats, the average chance for those with the right items was 48.8%.

That, to me, is not a pretty good chance.

Not trying to have a go. It's just that less than 50/50 feels poor to me. And yes, I do appreciate that it is possible for the majority to have a "pretty good chance" and for a seriously ####ed minority to have slim/no chance resulting in an overall figure of "a pretty good chance for the majority".

Generally though, that feels bad.

Honestly, without knowing liching stats, it suddenly feels to me as if you are better (in terms of hours played per transformation) to attempt to lich. For example, does a well roleplayed mummy-wannabe get much of a boost at 350 hrs relative to a lich wannabe at 350 hours? To me, I suspect the two odds are much the same for these kind of characters.