I totally didn't
Don't have a whole lotta free time anymore, so I won't get to one any time soon either. This looks like a pretty decent writeup though 
http://m.instructables.com/id/Replacing-a-CR2032-snes-cart-battery/
Yep, that's pretty much it, except you COULD surface mount the A clips on most SNES games. I've done it without issue.
You can't surface mount on Sega carts though, and the boards are slightly thicker, making it a bit harder to solder
I only mention this because when you try to bend the contacts on the A clips they tend to fall apart.
Edit: also found some clips I'm going to be trying out on a few gameboy games.
http://www.ebay.com/itm/321177640297?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649Edit: Got a lot of cheap chinese CR2032 ($10 for 50)
No idea what their life will be but they're surprisingly more consistent in their voltage than some energizers I have.
I've been checking each one I use with a multimeter for obvious reasons. Tested some energizer for comparison.
I got 2.7v - 3.4v on various energizers. The cheepos all read between 3.0v - 3.3v (probably tested 6 of each brand)
Edit 3: I keep doing edits because I don't really Feel like bumping an old post. Maybe I should just add this all to the original post.
Anyway, Just did 20 or so battery clip installations. I have a bad habit of installing them for games I'm selling, but not my
personal collection. Did 20 in less than 2 hours while watching youtube. :p