I think you're all crazy.
Rugby Challenge was excellent, certainly more complicated than rugby 08 (I'm not talking about RWC 2011, which was very bad) but with a good gameplay, freedom as in rugby (the position of players), the rucks...
In fact, if hb studios simply do RWC 2011 or Rugby 08 release PS4, the game will be bad, do not sell well and will not allow the installation of a series!
None of the rugby games I mentioned are flawless. Rugby '06 and Rugby '08 were products of 2005 and 2007 and were good at the time. They were a step in the right direction. Sure they have problems and flaws. The structure of how your own AI played was average at best and the gap in the centres was terrible. By 2011, a lot f what was being done there had become terribly outdated and the game felt too rigid, tending towards being on rails. The graphics were terrible and the customisation, a joke. HB's rugby games were not great but they are not alone on this.
Rugby Challenge had serious flaws.
It has little to no structure, it has a lot of bugs.
Crazy passes, even when they should go to hand.
The defensive line would just not be there at times.
It has a ridiculous number of offloads to attempt to compensate for poor AI.
Players wander off-side of their own accord.
You don't have great control of your player, when scoring tries you can get forced out by 3 consecutive tackles where you stay on your feet (RC2).
Players can also (if they are strong enough) can go from chain animation to chain animation, getting knocked around in a sea of tackles (RC2).
There was a massive database error in the first ***le which meant you couldn't do much customisation on console without players duplicating themselves.
Forwards spend little time in rucks or following the ball (unless you wanted to lose those rucks).
Backs were often wildly out of postion.
The fullback and first-five wouldn't pocket in the first game and not deep enough in the second.
It has the camera cutting off large chunks of some grounds on side-view. This was known with a ground at least on RC1 and not taken care of RC2.
Glitches galore (mid-field line-out anyone)?
It is not excellent. It has nice graphics and a good degree of customisation in RC2 (the most broken one). If memory serves, you were into customisation/modding and in RC2, that's all people do now, they don't play it, it's become dress-up dolly rugby "I've got these jerseys and this player with his new hair-do!".
Although, I have not claimed any rugby game to be excellent.
I don't see a series of Rugby Challenge continuing either unless they address serious bugs in the way they've made the past two games. I would even claim Rugby Challenge 1 as the better of the two. Tru Blu did not stand behind their game by paying for a decent patch for Rugby Challenge 2, the one that went in was miniscule. I think they couldn't fix what was broken without investing a lot more time and money. Patches now (and for some time have) cost nothing on PS3 and Xbox 360, yet they did nothing to really address the issues they could have.
I really hope Big Ant make a rugby game. They've gone from a poorish Rugby League Live, to a good game in Rugby League Live 2 and only look to be getting better with their just released Don Bradman Cricket '14. They follow up with patches where necessary (did a few for Rugby League) and listen to feedback from their consumers. In AFL (Aussie rules), they released their first ***le, to a largely "hey it's okay, could be better" sort've response and then the producer Tru Blu gave the sequel to another developer. Now the fans are screaming for them to be given back the franchise! That's the kind of developer that we need for a rugby game. Even if they don't get licenses, they allow for a huge amount of customisation.
i look forward to screens 
