((A compromise solution might be this. Chancellor forms coalition. President asks him to form a government (in the British sense). Chancellor names ministers, which President must approve.
To Brothersid's points:
I agree that the President cannot be part of the coalition process. If he is, the Chancellor is entirely meaningless and we might as well get rid of him. The President should be an impartial politician, above party politics, and thus must work with whatever Chancellor/coalition he is given.
I believe TJDS was referring to matters of general procedure. The Conclave and Assembly have to be separate, with separate fields of responsibility, or again we might as well dispose of the distinction. Constitutional amendments
must exist outside the President's jurisdiction. Other matters, yes, the President should have to sign off on it.
How could a government ministry exist without the sanction of the government? I don't care who pays the bills.
The clause I put into the President's powers was purely a matter of covering my ass in case I missed something. I did not intend it to become part of the official law.
The coup system is a good point. I don't have any easy answers there.))