This kind of thing has been done since at least the 1970s. We have a couple. Here is a '68 D-12-35 converted long ago -- at some time, it passed through the hands of both Randy Woods and John Arnold. Braces souped up -- my wife calls it the Alabama Jubilee.
Here is a retopped '67 D-35 -- with mid 30s braces. The original top had collapsed.
These are both great guitars that play a real role in our lives. BUT -- historically, they have not been valuable guitars. I have not seen any indication that that has changed.
Let's pick,
-Tom