To build a wondrous structure you have to spend huge amounts of GB, and maintenance is 2GB per level. All you get is 1 RP per level.
So just in maintenance you're spending 2GB for 1RP.
It seems for most holding types you get more regency than gold, anyway.
Is the option just there so you can say "Hey, I built that, it's cool!"
It doesn't seem reasonable from a mechanics standpoint, unless I missed something.
Is it really just there for the cool factor, or is there something else?