KAD is absolutely right and it was designed that way (including the app-plugman-web behaviour) using commandline is like the expert option "I know what I'm doing..."
I think we can simply update the working app-bins by adding <device>SMP</device>, of course WAM has to be patched to use this as well and display only compatible apps.
Regarding missing libraries: this is not surprising atall, go and compare the libs present in stock Live fw and WDLXTV, many libraries were already added by b-rad and those are probably missing on SMP.