Just messing around with some hooru lists around, and as far as control goes I'm doing great with this list. I tried Rost intead of Sediti but from my expirience sediti is just better againt control and about the same againts aggro. The sideboard card I use the leat so far is avigraft, gavel is simply amazing with all the golens out there. And 8 merchants may seem much but i usually have the card i want to answer the theats or getting sanctum as fast as possible to pressure the board. Currently at 23 with it and enjoying. An Ice Bolt may work well but have yet to test it, taking out some vanquish or defiance.
If you wanna try let me know how it goes for you.