Quote Slugger McBatt="Slugger McBatt"The "last 16" would make it interesting, but wouldn't work for two main reasons:
1. most people are not going to plan to go to Edinburgh if they are only going to get a couple of weeks notice that their team is there.
2. BBC have the rights to the Challenge Cup, and they are not going to show eight games. In fact, they wouldn't even show four.
However, it would give the Championship teams something to play for in the earlier rounds, as some luck with the draw could see them with a big day out.'"
I think the main stumbling block is your first point. At the moment, the fixtures fall as follows:
Quote Slugger McBatt[uPreliminary Round:[/u 17 January 2010
[uFirst Round:[/u 23 January 2010 (1 week later)
[uSecond Round:[/u 13 February 2010 (3 weeks later)
[uThird Round:[/u 06 March 2010 (3 weeks later)
[uFourth Round:[/u 17 April 2010 (6 weeks later)
[uFifth Round:[/u 08 May 2010 (3 weeks later)
[uQuarter Final:[/u 29 May 2010 (3 weeks later)
[uSemi Final:[/u 07 August (10 weeks later)
[uFinal:[/u 28 August (3 weeks later)'"
Only 3 weeks between the 4th and 5th Rounds. And again another 3 weeks between the 5th and QF. You'd probably need at least 6-8 weeks to get a decent sell, which could be done by moving the 4th 3 weeks earlier.
Something else which I've noticed (that also happened last year) is the large gap between the QF and SF. Why not hold the SF as a double header and mix it in with a 7s or 9s weekend for the clubs that didn't make it?