Wicked and NetworkManager are both unnecessary when using systemd-networkd, which I do in all Tumbleweed and 15.3 installations. Most TDE packages will not install without wicked installed, which seems to be hung on libtdecore.so* from trinity-tdelibs requiring wicked.

What's so special about wicked that systemd-networkd isn't good enough network support to enable basic TDE/TDM packages to install?

After re-installing wicked I was able to get another 69 Trinity packages installed. Afterward I force removed wicked, before starting TDM or a TDE session. Zypper -v produces no complaint about missing wicked. Rpm -q -R trinity-tdelibs output does not include wicked in output. TDM and TDE are apparently working as expected.