don't know why you are complaining about the nature of the new system, as opposed to bugs in the new system
the duke+lord of grehk lost city of grehk, remained as duke of grehk in the last week or whatever it is.
---
it's not broken.. it's just the way you set up your realm isn't compatible with how it works atm. if i am reading it right, you basically want the ruler and duke to be a double position in your realm and voted on monthly or whatever it is.. that's just not possible atm. (alternatively, duke and lord as double position.. same thing... ie essentially a 2 tier-ed system as opposed to 3 - not even counting the knights.)
unless you are saying... you want to be duke.. forever, someone else can get to be ruler or lord, but no one else can be both or duke. well, you ain't the duke.... so if there's to be only 1 duke position and you ain't it, then you'll have to boot someone else out of it with whatever means.
---
should lords who win rulership elections be auto-promoted into having their own duchy?