Re: Quest kill bug - worth to rebuild ?
If you just want a char to do MFing only, then i would say that its worth it. Just be reminded that this char will never get into Act4 Hell and so will also never quite reach lvl90 or above. So all you can use that char for it to kill Hell Meph over and over again, nothing else. No high level crafting, no searching for Baal small charms/grand charms to reroll and so on.
If you plan to build a char to do all these other things with, then i think it would be worth it.