Perhaps a reworked version of a Queen song would be quite interesting (not just a re-recorded Queen song but one which sounds vastly different instrumentally as well as vocally). But new material would ultimately be the best and more popular option of the two.
I'd rather they didn't do any, or if they decide they want to then it should be new material. Leave the old stuff alone. But in saying that I think Brian and Roger's best songwriting days are behind them anyway so unless they find something new within I can't see it being much chop!
We should not be doing this.
Just think of the money and keep smiling.
Quality is relative.
Does anyone really care about this?
All fine song title ideas.