[BirdOPrey5]

You can easily hide a signature via a quick template edit-

Edit your postbit or postbit_legacy template

Find the code:

__________________<br />
				$post[signature]

Replace it with:

<if condition="$post[postcount] > 10">
__________________<br />
				$post[signature]
</if>

That won't show signatures of anyone with 10 or fewer posts...

But now I suspect you mean to disable them from even making a signature... I'll play around with this and see if I can add it to a future version of this mod or a separate release... will post here either way.