Thanks everyone!
Cloud 7 0.5.4.cpt.hqx
This includes tt's updated cloud image, centering-ish of © line, and a bug fix when connecting after a disk image had been mounted, unmounted, remount->sadness.
FWIW, all of the image placement is handled in the resources. If you open up the control panel in ResEdit, 'DITL' resource -4064 is the control panel. Control Panels are a bit weird because everything is shifted right by the same size as the System 6 Control Panel where it had all the different CPs in a vertical list on the left. System 7 maintains the shift for compatibility. Which means all of ResEdit's auto-centering and stuff doesn't really work so good. Additionally, ResEdit displays things in a different font than the system uses for CPs, so the visual alignment in ResEdit doesn't reflect actual use. All of these can be programmatically set at runtime, but I haven't done that, I'm just using the 'DITL' resource for placement.
The cloud graphic is 'PICT' resource 128, although size changes to the graphic need to be reflected in the 'DITL' item.
Anyway, that's just an FYI for anyone that wants to play with the CP layout themselves. If anyone does mess with this, feel free to paste the resources you've changed into a new file, and send it to me.
CC_333: regarding the combination of this and Serial Disk, that's something I can look at down the road. Serial Disk (I feel) is fairly solid right now. I haven't had problems using it in a variety of configurations, etc. While HTTP Disk/Cloud 7 works well in some configurations, I don't feel it is quite to the same quality as the Serial Disk yet. So, for the moment, I'd like to develop them separately. Down the road, if/when they catch up to each other in development, combining them might work well.
Thanks everyone for the suggestions, the graphics, and the interest!