Well by the moment i think is a good idea, Salix OS came with "Warehouse" ( Package Manager for installed FlatPaks ) and "FlatSeal" ( Can change some properties of installed flatpaks, i use this for make Snes9x access to host filesystem )
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Well my idea is Salix needs make a new package Manager
gslapt is a good package manager but i think i need options are not available, i take a Debian Synaptic Screenshot and i try make a mockup

My ideas are : In the bottom, the tab list, if you are using just 64 Bits native package
The first button should be " 64 Bits [ x86_64 ]"
The second should be " MultiLib ", when you click this one, here the package should be manage by " multilibpkg " tool and just is this for set the base libs of system, and have two Sub-Tabs like " Compat32 " ( 32 Bits ) [ x86 ] and " ARM / Aarch [ ARM v8 Aarch64 ]
The Tab compat32, that packages should be manage by the "Compat32pkg" . If the Base System are set to " MultiLib " this should be the first tab, and the gcc , and the anothers libs, should not be replace for newer version of x86_64, because the multilib in this case are the base for the installed system.
I try to explain how install multilib using that tools on Slackware(64) -> "Here" , but i think that tools need work, because the compat32 search, needs the used know the right package name and in where section of package is located. That not have any sense to be a " Search " option.
The third should be " FlatPak " inside should be " Programs " , " Common " ( The common packages like : flatpak.gnome.locale, well i really don't remember the right name, but the base common shared libraries like gnome, opengl, kde plasma, locales, and inside have a description and which packages installed use that common lib ), and finally if the user click properties, can change some things like the tool « FlatSeal »
The fould should be « SBo » here just the packages, automatized compilation, and this must be maximum priority to skip/avoid the package on repository just replace every time.
Probabily if you can decide make this idea possible, that needs start from scratch a new package manager, for integrate better improved versions of :
slapt-get
gslapt
multilibpkg
compat32pkg
warehouse, and
flatseal
In the same program, because the important is the integration and cohesion inside the tool.
i hope you take this ideas like inspiration for make a better package manager, and if possible for terminal like aptitude compatible with gpm, and the graphical version similar to Synaptic.