Necropolitan LA with House Rules

[Maat_Mons]

I'm considering running a game with a variety of house rules some of which would significantly effect necropolitans.  As in Pathfinder, all undead use charisma instead of constitution to determine bonus HP, fortitude saves, and every other thing normally based on constitution.  Also as in pathfinder, undead get d8 racial HD and undead templates do not change class HD.  Using a variant from unearthed arcana, each time a creature takes damage, an amount of damage equal to its armor bonus is converted to nonlethal damage. 

These rules make necropolitan a good choice for a charisma-focused character by increasing single attribute dependence.  They also make necropolitan a good choice for a heavily armored character, by effectively giving DR 15/- (assuming +5 Mechanus gear) on top of any other DR. 

So, if I were to give necropolitans a level adjustment, what would be fair?  Assume I get rid of the level loss normally required. 

[Saxony]

LA +1 or LA +2.

1 LA seems a bit small. 2 LA seems a bit big. Perhaps 2 LA with LA buyoff would be a good compromise.

[Lycanthromancer]

LA+2 is way too big, and LA+1 is only acceptable if you have LA-buyoff.

Really, the only reason why people take it now is because it's a decent template with no Level Adjustment.

Keep it like it is, with the XP-loss, and it should be fine.

[Phoenix00]

Wait you don't take physical damage up to your armor bonus, for this is nonlethal damage, and undead are immune to nonlethal damage?

[weenog]

That's the idea.  That's also why things with no Con score aren't allowed to have Regeneration.