I would have just a few reqs:
I tried to compile nautilus-image-converter from source, everything went
ok, but it does not work on openSUSE 10.3. Neither image-converter
script from Nautilus G-scripts. I installed Fedora Rawhide package and
it works fine, fortunately.
I've compiled comix from source with no problems at all, but it would be
very nice if you include it on official repos. Evince can read cbr and
cbz files, and thumbnail them within Nautilus (which is very useful),
but it is very unusable for reading comics. It consumes too much of CPU.