i think the idea would probably get a polite brush off, tbh...
ben & chris, believe it or not, have not been lifelong sisters fans. they hadnt even heard most sisters sings until the last tour... i gather the pair of them went on a shopping spree while in glasgow, where they bought copies of all the sisters albums from hmv
while we might know every single nuance of sisters songs, inside out (even those who dont play any instruments), they're still learning this stuff
i've no doubt that they will uncover songs on the back catalogue that they like, and may even ask von if they can try them, but as stated above the setlists are mostly determined by von, and based mainly on which songs he has taught them
the couple of
very new songs they have been doing are the fruits of chris, ben & von's song writing efforts. i gather 'still' was written on tour, and vefore notts it was only ever played during sound checks.
imho, that it was slotted into the set so quickly is a testament to ben & chris' determination to inject some of their own input into the proceddings
going forward, i think its more likely that there will be new material written by ben, chris & von, than any plundering of the archives. however, given the notoriously slow rate at which von writes lyrics, i'm not holding my breath for any of them
