okay this is the start we have trains in the direction.
as u see i thought of 3 type of forms and ideas for a train base to function.
1. base must be mobile, good idea from anarchind mobile train if i do recall and it must have not be based on tracks. no really if it can put tracks for every piece of bit in map it's gonna be hard to code. i propose it should be a shell look train unit and this is just a unit. it's small rover unit tech but it has guns like scorcher. you know lets have trains units based on each base zero-k has the spider baser, a walking spider train unit. some special tank train and get this the whole concept it can connect each other. yes connect each unit.
the mobile base can move with it's units be in front and put missiel train, laser train, and have special unit that can carry units like bear and tanks. this whole concept can be easy if u replace units like boat unit mistral just make it longer give it wheels, or hover ability or legs like spider . and some units will have the best of both worlds.
some train units that have redback lasers, missile fencer train, emp train unit, and the best of each base.
2.flying train units are possible it would a combo where u can make two train unit the capability to fly without building airplane base or gunships base.
just like the train before you this train has a special ability it could connect to other train units and be able to carry them and like a single line fly them in a singular line and be able to carry them.
3. idea if we have train factory and train units, we also could have strider hub train units. consider a special super armor trank train
this special strider train units can do special things like a super wall train unit which could be form in a circle in battlefield and be able to defend from detriments ;D. special tactics can be implied.