@Atrik considering your four points, and using the Construction Panel layout I proposed long ago, I end up with this, which has the same height as your panels, and the additional width is less than the width of a small button:  

As a military colony?  

Things have changed so much. Alexander as Amon(Baal-Amon?).  

At least this should improve some details.

so britons build hill forts to 'expand'.  We give them (and other trible civs) only one "main civic center" then they expand through "colony" type buildings, brits, gauls, germs can all start doing it p1 with their hill forts, oppidums and  encampments. Iber is a tribal civ but cant expand utnil p2 like other civs with its "castro".  Castros are a liuttle closer to colonies, maybe a little stronger, id have to check all the stats.  Where as the other 3 are weaker than a normal colony and defintely weaker than a cc.