I haven’t started a career, but even in Play Now and Competition you can tell that there isn’t the variation in skills that is needed in this game.
The difference in speed between a fullback and a front rower doesn’t reflect reality.
The difference in typical strength between a lock and a winger isn’t noticeable.
Sidesteps from bulky forwards aren’t much different than from speedy backs.
A tackle from a number 8 is pretty much just as likely to stick as a small halfback.
I appreciate that in real life, the differences in skills and strengths across all of the positions in Rugby has narrowed somewhat, but not this much.
Rugby '06 and Rugby '08 innovated with Star Players and this was a pretty important and well liked feature. International teams typically had anywhere from 1 to 4 players which were dominant in their skill areas.
It wasn’t all just extra skill in fending and stepping either.
The likes of Johnny Wilkinson, Gavin Henson and Francois Steyn could punt the ball out of their 22 and almost get it to the opposition 22 on the full!
With All Black Jerry Collins you could hit the opposition players in a tackle and more often than not force the ball out of his hands (not always a knock on) for you to scoop up!
It was a lot of fun. There is no reason we can’t have those kind of things again.
By the way, I’m on here a fair bit suggesting this and that to Big Ant, talking about what isn’t quite where it could be, but there are a lot of areas where this game is looking pretty good.
Graphically in a lot of areas the game looks good.
The feeling of drawing and passing is a lot of fun.
Drawing in players and offloading in a tackle is also well done.
The amount of content, teams etc is great (could still have the NZ NPC tho). 
I even like most of the music in the menus!
Please though, also look at what NotRoss has said and see about players varying properly and make some of the stars of the game stand out. Even if they get slightly exaggerated, it’s great having some players be weapons that you really want to sign to your team.