you asked if we had ideas to add ... (2nd post)
...
... so I will add mine.
I've always wondered how doviello can live around horses without eating them (them being barbarians and all...).
So I thought about bear-mounting units ..
maybe it's off-flavour or to complicated to do (I have no design-graphic skills so I won't know)
something they may build upon having a bear cage...
something like : bear cage +tech X ==> bear mounting unit X
(ex bear cage + AH ==> bear ; + Animal Handling ==> bear rider; stirrups allows for cave-bear axe. + engineering ==> bear-mounted crossbow : stable, slow, powerful mount + can defend itself in close comabt : ideal for transporting crossbowmen

)
and those bear mounting units have the unique ability to by caged.. so 1 bear captured allows the whole civ to make bear units.
it would give them a really barbarian looking cavalry.
and you can have bear handlers (foot units) then bear axemen, cave bear cavalry, grizzly lancer...etc (but with better names...)
the issue is that bears are not so frequent depending on games,
bear are slow, so they would not have really fast moving units.
there are lots of horse using units (horsemen line, chariot line) so it means lot of work for the graphics and animations + lot of new units and abilities to come by.
so maybe it's not so much a good idea.
Cala.