First off, it's all about the gameplay, it's the be all and end all at the end of the day. It has to stand up at both single player level and at multiplayer level. Not only does it need to play like real rugby (hopefully like the best games of real rugby), but it has to have balance so that we get realsitic scores in a 10/15 minute game, and it also has to be completely glitch free. That includes the elimination of any "money" plays (e.g. a certain sequence guarantess a try or possession), and also online, that players can't exploit flaws to make "cheap" plays.
Then we come to authenticity. It would be nice to have player facial likenesses, but not essential. What is important is that the players have the same physical attributes as their real life counterparts. Height, weight, speed etc, needs to be accurate, with those attributes having an effect on gameplay. People who wear scrumcaps need to have them, left footed kickers etc needs to be correct. I'd like to see players have a form stat, so it would be worthwhile dropping or subbing someone.
People asking for the editing ability of faces, jerseys, crests etc are in dreamland. The most you can hope for is names and maybe attributes and even then it's unlikely you'll be able to import soemone else's from here. This is a world away from PCs. Create a player and the ability to change squads would be nice. Important that online play uses default squads only to stop cheaters. Hopefully we will have a proper license, which HB can update via DLC in the future.
Important for me regarding single player is a realistic tournament option. Ideally a franchise mode. So I can play a Guiness/Magners/Top 14 season which includes Heineken/Amlin cup fixtures and qualification for the following season's comps. Obviously the southern hemisphere boys will want their equivalents. I'm not too bothered about a license here, so English League/ Celtic League / European Cup etc would do for names without sponsors. Same with the international teams, realistic comps. Something I've always wanted is the ability to choose a club and also a country, so the international fixtures are included in the season. At international time, you choose the squad of your country and play the games, before going back to club play.
There needs to be a range of difficulty levels to suit everyone, people need to set the challenge at the right level. Make sure diffculty changes relate to AI and not just make players faster. At the top level there needs to be a serious challenge for longevity.
Online, I'm guessing we'll only get head to head, which will hopefully work well with no lag. If there's leaderboards, quitters must be punished. Ideally I'd like to see the "Online league" function of FIFA. Everyone signs in with whatever team, then whenever you're on you can see who else is on and can play their fixture there and then. League table gets updated automatically. Would be great to run comps from here.
I can't ever imagine there'd be a sevens option in this game. You'd need a completely different AI to the 15 man game, not happening any time soon in my opinion.
Having said all of this, I have big concerns over the size of the budget. As has been mentioned there is a 20:1 ratio comparing sales of rugby to FIFA. That's a lot of dough. With EA pulling out is that damaging, or are HB now getting a bigger cut of the pie, potentially giving them more money?? Either way, I'm guessing quite a few of us will be disappointed with the feature list. Let's just hope the gameplay is the best we've ever played and can play a decent game online.