I cannot help but wonder what role you envisage for the Queen Elizabeth 2 on Liverpool's waterfront? Undoubtedly the words museum, conference centre and hotel will spring forth. I expect that the hoteliers in Liverpool would not be too enthusiastic about that idea. Mind you, it would obviously mean largely gutting most of the ships passenger accommodation in order to make it into acceptable hotel rooms. After all, 21st century hotel rooms (and the expectations of today's hotel guests) and the cabins aboard a 40 year old former liner are totally different things. Then of course we have your proposed location, valuable harbour front space. One day the city will get it's act organised and cruise ships will really berth and turn around there and thus the city will earn money from that space.
Then, we have to consider who will actually buy the QE2 and return her to the UK and invest in transforming her into a viable revenue-earning venture. If the oil-rich in Dubai cannot afford to do it then you can be sure that no one here can! Read the history of the former Queen Elizabeth and you will see that after her days with Cunard there were those with hair-brained schemes for the ship in a static role. The final days of the QE2 are uncannily similar to those of the old Queen Elizabeth, sordid and undignified.