I would like to see Forts that could gather resorces and cost to expand there influence.
Have a Unit Engineer, That builds and maintains the fort. Requires Fortfacation techs
These can only buid a few Improvents - Watch Tower- Wall- Field Hostptial- Fortifications
Wall- This takes one Space - blocks movment - This will let you expand to block areas, So you could build a great wall if you wanted, Can be attacked like a unit- Has High Armor but is weak vs Siege type attacks Types of wall - Picket - Stone - Reinforced - Great Wall
Have the Pack cost 100g and 100 mat
Say (size)*200 Gold ( Size)*200 Materials + Size -1(200 gold, 200 materials) and takes Size *2 turns to upgrade
(0)Military Outpost - Takes 2 turns to build
(1)Keep - cost 200 g and 200 materials takes 2 turns to upgrade 1(200g,200m) + 0(200g,200m)
(2) Small Fort - cost 600g and 600 materials Takes 4 turns to upgrade 2(200g,200m)+1(200g,200m) = 2*200= 400gm + 1*200gm = 600gm
(3)Fort - cost 1000g and 1000m Takes 6 turns to upgrade
(4)Castle - cost 1400g and 1000m Takes 8 Turns to upgrade
Have all hostile units slowed by 50% in there area, Need Custom Battle Maps where The Defense starts on top of the walls with +75 Def and an attack bonus
Caravans get auto spawn guards in range of the forts.