Over any one account, if you have obtained any mentor badge, let the reward be shared across ALL characters.

I know this has been suggested before.

But then people will know for sure that i'm a spuck alt

TRS, it would not show up as a badge, with the exception of the character which it was done on.

-1
I can have an alt in EMS and another that is a griefer... so why reward the second?

You still can find an isolated stations, login as alt.A, buy stuff, drop it outside, swap chars and pick it up as alt.B... that's enough.

I think I agree with Alloh on this one.

You could have checkboxes or something in the character selection login screen controlling which badges/privileges are applied to a particular character but have mentor points accumulate per account.

Sweetening the incentive to mentor newbs doesn't hurt, I don't think.

p.s. you could also do this for alpha/beta badges, etc.

Those who mentor generally do not grief. And if they do, then so what?
40 Mentor points is grueling to accumulate.
I like Maalik's solution.