Thanks for the reply
Tactical missile launchers are defense buildings for an AI.
It will attack land experimental units with it. Also T3 mobile arties that are close to the base.
I am very much doubting how effective this is, it is easy to dodge (I used to do it all the time, I've been liking non-experimental tactics lately). For the very considerable amount of resources it consumes that could be spent elsewhere. Long range defence would be better as T2 static arty.
A trick I used to use to make sorian AI harder back in the day (it loved TML too) was to prevent the building of it. Made the AI noticeably stronger!
Nuke silos are always builded (so the player can see the threat) but are not always loading missiles.
(they are idle/paused most of the time)
This is cool!
But the other point was that the AI could occasionally (especially if adaptive or experimental) mix it up and build a T3 arty instead.