Make it so that although your plot is under your characters name, give all characters on your plot the same "abilities" making it so that its more like your account owns the plot not just that individual character.
Since you can have only one plot per account it wouldnt effect that atall.
The reason i suggest this is because i for one do not do the construction work on my plot with the owner of the plot. I dont know about anyone else but it would be extremely handy if i could check back to see what resources i need to put on my plot (as you can with the plot owner).