I am going to upvote this, as I think you raise some good points.
Obviously all we have seen so far is the impacts that have come with the content we have recieved, there may be more planned such as Ilum and Nar Shadda which may adjust some of these, but yes I think with where we stand right now it makes sense.
What I like from your proposal
Compensating Jedi Lives with reduced Ghost time
I really like this. 24 hours is long but if you only play this game for 2 hours and die then it doesn't really affect you other than make it more of an inconvinience when you log in the next day. I think making the ghost 4 hours or something is a better balance along with reducing ghost time to compensate as you suggested.
Nerfing Vis Reduction in the ranch
Yes please. You can pretty much wait until NPC's give you warnings about being known (1,000) and then afk in the ranch for 100 mins and reduce it to 0. If for example the glowy time would be 4 hours, then scale that amount to at least that too.. so you're effectively as good as ghosted but not actually a ghost, in a way.
What I don't quite like
1 life
I think 1 life for PvP is fair, but I would think 2 lives would be better in cases where you die in an instance and then can clone and come back without ruining the instance for all other 7 people. We've had cases of people crashing a lot in instances and dyng to mechanics because of it, other people shouldn't be punished for instability in those cases so 2 would be fairer in my opinion. These people weren't Jedi but if that did happen it wouldn't be cool.
Removing Vader
I think removing Vader takes away a cool little flair from this feature. I'd be more comfortable if it remained but had a much larger timer associated with it which still allows player bounties to occur and then Vader to finish off if it unsuccesful.
Locking Ranch Time
There might be other plans for the ranch like the NPC's there giving quests. so locking it off isn't a solution.. maybe lockin a room off, and only while in that room you get the vis reduction however, might be okay.
As a side note, I think there could also be better ways to communicate when a Jedi is on the terminals. Maybe some random BH's can get a comlink, or maybe a discord channel you can subscribe to like the GCW channel.. or maybe some NPC's say to BH's "did you see the new target on the Mission Termianals??" which ties in to the same AI system that Jedi do for vis. Hitting refresh at the terminal isn't fun and just contributes to burnout.