I got the deepin iso, booted it, downloaded the Deepin Software Center .deb file and tried to install it on my wheezy build. Dependency libc-ares2_1.8.0-1_i386.deb was not available, and I didn't investigate beyond that. Aptitude showed that installing the deps would use 8265 kb. Installing Synaptic without recommends would use 7875 kb.
Installing software-center from the debian repo would use 41.7 mb. Uh-huh... Synaptic is looking better and better.
aptitude-gtk is not available in i386 or amd64 (yet?)
for 8 mb, I'd probably go with Snaptic. Would it require much more when installed on a kde system?
Any other graphical software installers we should consider?