Hi !
Well, I am actually tempted to create a TCE of dpkg+apt.
Of course it may sound weird, but I have only two problems in creating it.
The mutual syncing of tce-load with apt+dpkg
I have got a instruction file from the web to create dpkg and I can do it. But, for example, when we install libc6 by using dpkg+apt, it may interfere with the already present symlinks of glibc_base-dev extension. This means that we need to manually add packages to dpkg status file but I don't know its format. And also, we would need to stop using the Apps browser or the "tce-load -wi ??" command. This also may lead to the removal of already downloaded packages.
But also, for loading firmwares of wifi, we would need tce-load. What to do ?
Persistent folders of temporary folders
I don't know if the title makes any sense but dpkg works by extracting the files and placing them in the folder unlike the symlinking method used by tce-load. This means that we would need to have all deb packages stored. Also, as we extract the packages, that would occupy 2X the size of .deb files (.deb file on HDD + the extracted files).
Hence I think of persistent folders as a workaround but I don't know how to add custom bootcodes for persistent (not only home and opt but also) var, sys, bin.
Any ideas ?