How would you raise her?
Like Paul said, Britannic isn't as strong as she once was.
First you'll have to remove to bow section, raise the rest, raise the bow and then 'fix' the bow to the hull again.
Also, all the woodwork is gone, if you look at wreckpictures of Britannic, the whole bridge is gone.
Another thing, what would you do with the engines?
If you make a museum of her, you could try to let them 'shine' again, but they will never work again.
If you want her to sail again, you'll have to put in new engines.
You could try to build a new one, but I don't it would make money for the builder.
Most of the people are interested in Titanic, not Britannic.
Not to mention all the problems you'll see appearing when building...
Again like Paul said, where would you put her?
Not all of the harbors or other facilities can handle such a large ship.
The main question; who going to pay all of this..
My opinion is the same as the owner's one, let her stay where she is.
I'm almost sure that if she would be raised there will be harm done to the ship.
Isn't it like 'I don't know what that is, so remove it', it will be a souvenir shop in the Lounge.
BTW, I forget the main problem I think, when Britannic sank she was a hospital ship, not a passengerliner.
She wasn't ready, there still had to be gantry davits added, windows etched out etc.
If somebody would raise her he would want a RMS version, so he would have to add things...and I don't like somebody who doesn't know the ship adding things...
Regards,
Remco