Zoidberg...yes...that is the way the buildings work. This is what I mean by the basic structure.

IF you have a 'barracks level 1' then you a building to recruit basic troops for all the factions. The way this structure will be built up has to be sorted out before the detail layer can be added.

Some factions will need to have special build trees, purely because they do not fit hte standard pattern. Tomb King's for example, would need to have a Zone of Recruitment approach, rather than simple build tree. The resources for their army come from limited places.

This would require, probably, a special resource for recruitment or a building that can only be built in certain places. These things need testing and proving before we start to flesh out the detail.

Yes...this is work that needs doing.... but we can't rush into it.