Well, I did some calculations. This is not critics or something, it's just a food for thought for everyone who enjoy to play necromacers like I do.

We know that GOOD chances for becoming a mummy are around somewhere 85%. To maximize your chances, you have to spend at least 270 hours (according to Sam's (?) thread on Dio's) and you have to perfect all spells that is related to the creation of undeads (armor of living bone, animate dead, reanimate, wall of putrid flesh, lesser golem, greater undead, manifest shadow, possibly corpse thrall, graft and embalm skill). So, you'll have to invest A LOT of time and effort to get your chances to 85%.

From the other hand, if you have nothing practiced and you are below 100 hours, your base chance is 33 (see Dragguul's timeline on PBF, I bought his PBF just to see how much is it).

In case 1, you play for about 3 months to maximize your chances (of course if you aren't me, I can burn down 200 hours in a month). 3 months to have 85% chances.

Case 2: you powerrank to 47 and go for the quest. In 3 months, you can do about 6 runs (2 weeks to 47 for necro is easy). Here are your chances (rounded):

Run 1 = 33%
Run 2 = 55%
Run 3 = 70%
Run 4 = 80%
Run 5 = 86%
Run 6 = 91%
Run 7 = 93%
Run 8 = 96%
Run 9 = 97,2%

So, by MY only opinion, and IF my calculation is correct, it's not worth to waste 270 hours to die on the becoming (which IS disappointing and discouraging, trust me). For me, it's way better to burn a character and in case of failure reroll - that way I won't lose too much time and still fail (270!!!!!! hours is a lot, you can create a successful startup in that time).

I may be wrong here, though. Again, I repeat It's not a call to action, just my thoughts on that matter.