If they're going to do something special for the 20 year anniversary, they need to release a recording of the live shows where Further was played in full.
Are we talking about the initial Roundhouse gigs? I always got the impression that this was a little underwhelming from the people that attended.
I can even say when I saw them in September of 2010 where they were still playing the majority of the album, it was the least exciting show I've seen from them. All of the visuals from the 'Further' DVD and the WATN tour had been recycled into the 2010 live shows. Some of the tracks were played in exact order from the album and there really wasn't a whole lot of interesting segues that we've come accustomed to. There was also other factors which they couldn't control that lead me to feel this is the worst show from them, but it is what it is.
Furthermore (no-pun), 'Don't Think' is a perfectly great live album which featured majority of 'Further' and included all the fantastic tweaks that the 2010 set needed.
I'm not sure there is much to revisit from this era which hasn't already be shared. Well, except maybe a legit release of 'Superflash'. But perhaps the hype behind that is a little overblown. Sometimes we're just wrapped up by the mythos of unreleased material, rather than giving props to the quality already in hand.
Going forward, I'd love to have "Another World" and "Horse Power" (with the fucking breakdown this time) featured in the live set again.