It's a critical mass problem. Unlike in the US where there is a slightly different attitude and therefore a multitude of very good museum ships (and aviation museums for that matter), over here there is a measure of indifference unless tied to a "core", eg Duxford, IWM/Belfast, Historic Dockyards in Portsmouth & Chatham.
Personally, I think it's a great shame, but unless the ship can be tied in with either Chatham or Portsmouth dockyards, she's a goner, South Georgia surrender venue or not.