abj9562,
Since wHowards' multiple mini-mods have to pull the generic DDS (double-arrows) to be made compatible with EUI Shortcut-Icons row, the only solution would be that HE could agree to integrate that feature into each of his individual files.
If he ask, i could always spiff up some custom stuff for him as long as the codes are altered accordingly. It's rather easy to implement, btw.
PS; In fact, i've already created a custom version for ZN-Eras and it's working as intended on my PC. This new stuff will be released later on the Steam Workshop as usual!
As shown by this image, you can see i (TOO) use some other mods; City-Production, Civ-Rankings, GreatWorks, Info-Addict (which received its own custom icon straight from EUI install folders) & Wonder-Status.
For sure, that magic-wheel is an entirely different concept (than EUI default horizontal pool) with a maximum of 8 shortcuts per Eras. It could be
adapted as another method... but i doubt bc1 would be willing to change that much within his own UI principles though (well known by players and working flawlessly as it currently stands!).
I can't speak for Nutty. Although i'd prefer him to "concentrate" on the LUA code for the ZN-Center component. If he ever has the precious spare time, that is!!