Removing imwheel means that X-related stuff crashes faster.
Using dpkg-reconfigure means that I have to figure out how to get my video card working with Debian. I have a working setup, but it doesn't use Debian's infrastructure for managing X11. Before when I looked at it, it wasn't at all obvious how it was working, and I have received "help" emails from others who are trying to figure out how to do it. Therefore I don't want to start down that path until I get desperate...
I'm playing with manually adjusting imwheel usage now.
Ben