I'd like to give cities.  To a weaker ally.  I play with 6 or more factions on medium/large maps.  Also if you could gift units to a weaker ally that would be a plus.
I hate when a weak ally begs for help and all I can do is give them stuff and hope they don't surrender.  I have declared war myself and beat back the guy on my own front, but he was still powerful enough my ally couldn't take back a city. If I did, it went under my rule for good.  *shrug*   I don't want to conquest every game.