Enemy Gaia units for scenarios


i am really happy that KotH and Regicide has been made possible for scenarios without heavy workaround hundreds of triggers (i was so proud that i got this working…). Could we have more changes along this line?

Could you please also make it possible to have enemy gaia units like in battle royal inside scenarios?
It would be also cool to get the option for convertable buildings, such that they function like monument just like in battle royal for stables, castles, etc.