I don't want to have to fight just to hand out viceroyalties and declare war. As it stands, when a strategos dies I just replace him immediately, no fuss, with the most qualified and loyal candidate.
What do you mean? My friend told me that even his viceroys were unhappy about the viceroyalties, and that his council never let him hand out viceroyalties. How would I be able to hand out a ducal viceroyalty if I have to fight my council every time I wanna replace a dead viceroy?
Why the hell he doesn't have "title grant ruler sovereighty"? It's one of you must have laws (the other being title revocation and imprisonment sovereighty; banishment and execution are not so important imho).
But from my experience - you WILL be forced to give your advisors favors if you want to declare wars(at least if you are blob). Normally I would suggest ignoring the council (yes, you can ignore their "advices", but you get tyranny modifier and they are allowed to join fractions) or getting war declaration sovereighty, but you are saying you already have problems with vassals...
One thing you should know about Conclave. It changes internal policy mechanics, but doesn't make it totally and absolutely better. Some elements are actually worse (i.e. you have only two yes/no crown laws, base obligation laws are OP, council laws coexist with centralisation laws, when they both implement centalisation-decentralisation problem; on the other hand, min levies were moved to obligation laws, making them actually working - old levy obligation laws were useless if you had high CA). But imho new system just feels better. It's just so high medievalish that you are supposed to make some stewardship=7 guy your steward, because he is grand duke of something. That you must ask your pairie de realm if you can make war with HRE - and they will be not-so-happy if you tell them "well, I was asking for advise, not permission".
(Also, I heard that maybe - but only MAYBE - we'll get some new laws with path 2.6, which imho can make Conclave even better, but that's very MAYBE).