- add column "showsigimg" to database and default it to 0
- add checkbox "Don't show images in users' signatures" under "Look and Layout Preferences"
- mod source to toggle showsigimg depending on checkbox state
- mod source to add
into head section if showsigimg==1
Problem solved. Thanks to btc_novice for starting this idea.
My goal is to make the best Bitcoin forum possible, not to appeal to current users.
If users are not appealed, then this won't be the best forum possible. Simple as that. You can have the greatest product in the universe, but if nobody wants it, you're fubar'ed. See Betamax.
Seriously, this should be rather trivial and doesn't really deserve all this drama.