I saw this thread yesterday and meant to write you. Sorry you had to bump it.
You've stated that it would cost only about $1k to go through the board. All the companies that modify the Ghost charge about $5k for it and while I've never worked on a modified one, I hear some quite good things about it when finished.
It would cost about as much for a decent board, even a used one to compete with what you already have. If you know what the problem is, I'd send individual channels or busses in to Creation Audio Labs(Creation Audio Labs - Boutique Gear and Pro Audio Upgrades - Upgrade Mod Soundcraft Ghost Studio consoles
) and have them deal with your issue at hand. If you're used to working on that board, you may or may not get the results you're looking for by going with a live board like a Midas over a Ghost which is intended for studio workflow.
So ultimately, at least by reading your original post, it sounds like you may just be looking for a change, possibly out of boredom or maybe not, and what's dangerous about that is that like relationships, the grass is almost never greener on the other side. If you know the board well, know the EQ well, know its gain staging, etc....you may just need to dismiss your boredom with what you have, bite the bullet and fix it for $1k which is a whole lot better and cheaper than spending what you'd need to spend on something that will event compete with it(midas/toft).
I hope I've give at least some food for thought...best wishes in your search...