I disagree that Ministry of Mayhem/Holly & Stephen's Saturday Showdown was as good as SMTV; I shed a tear or two at the end of the last SMTV (which can be seen on YouTube) and turned MoM off halfway through the first show. Watched the last episode and still didn't think it was funny. SMTV was not as funny when Ant and Dec left; they seemed to bring something to the show that others couldn't, but I kept watching because the new team of Brian and Tess as well as others who joined them over 2002/2003 were still funny with sketches like Eminemmerdale and Casually. I even still have the SMTV/CDUK book "It's Wicked".
John and Edward wouldn't be funny, good or even tolerable in my opinion as presenters on a Saturday morning show. I'll have to see it to give my final opinion on it if it really does go out on air, but I hope they rethink the presenters or the name of the show before they start.
MOM was terrible to begin with but so was SMTV. Halfway through its first year and its first relaunch MOM tried to clone SMTV, and that didn't work either and the show was still dire. Come January 2005, they'd revamped the show and thats when it really started to come into its own. I don't think it was ever as good as SMTV in its heyday but there was a certain magic with MOM during 2005. Mr Lee, Ray, The Doc, Snowy, Scratch & Sniff etc all gave the show a good identity and Stephen & Holly worked very well together. There were funny games too like Supermarket Sneak. But then it was relaunched (again) at the start of 2006 and it was back to being boring and tedious, until it slowly morphed into a Tesco value version of MOM.
Whilst I did really like SMTV, I think its rose tinted glasses as far as many are concerned. The first year or so was awful and even Ant, Dec & Cat have admitted that. It was only 'good' for about 2 of its 5 years on air- with Tess & Brian aside, all of the presenter combination after Ant, Dec & Cat were appalling especially when it became SMTV Gold and they had guest hosts every week.