Shouldn't the Hall of the Colossus be located near Rimmen?
Actually, it's supposed to be in southern Elsweyr on top of a cliff and between Torval and Senchal.
Add more rooms to the Senchal palace like guard barracks, dining hall, servants quarters, royal harem, etc (khajiit kings and nobles are known for having harems).
There is scope to add more rooms, so I'll do that in the next update.
More buildings in the Upper district of Senchal.
I wish I could do that, but with the current layout, there is no more room for any new buildings. Which is too bad - I'd love some upper class exclusive shops as well.
Add Pahmars and Alfiqs to the new areas.
I'll do it in the next update.
Replace the camels at the Senchal stables with Senches.
I'd think Khajiit rulers need some sort of mount, and senche tigers are only creatures and not mounts. But they could be used as pets.