I've tried TA kingdoms (for a mere 2 euros or so), but compared to TA that was total crap. Third party units? Where could I find those? If it looks any good, I might reinstall it. It's the only RTS that I actually liked playing multiplayer with (sprawling mine-bots over the whole map while playing with respawn is pure evil... respawned players won't last long for sure).
Sorry for the thread jacking krys