Not really, I only do reproductions when someone 
specifically asks for them these days, and then I 
usually improve them a bit...

Economically though, fancels are an inferior good 
and a subsitute for real cels; that means that 
fancels are a cheap alternative that people who 
can't afford the real thing use, but will usually 
abandon when they make enough to get the real 
cels.  

If fancels were valued equally, it would bring 
the market price down on the more rare and in 
demand series, which at least half the people in 
here would probably consider is a good thing 
because people bitch about the skyrocketing 
prices an awful lot.  So I suppose it depends on 
whether you're in it for the cels or in it for 
the profit.  

Of course, fancels really aren't valued equally, 
so it doesn't hurt the market much, except when 
some get used in not-so-honest ways.

...as for the signing, I usually just sign in the 
same place so the sig would be covered up if 
anyone wanted to mat it (I have the most un-
eloquent signature in the world, my handwriting's 
horrible) so half the time it's under the paint, 
half the time it isn't.  But I guess I'll start 
moving it now so it's always under the paint.  
I'm adding some other safeguards as well that 
won't be able to be changed without ripping out a 
portion of the cel too.