Are you selling motivational tapes? It reminds me of that guy from the infomertials 
I agree, there is a degree of depth in this game that has surprised me and continues to surprise me, probably because its so subtle.
In world league I have noticed that the best players with the best stats do not necessarily equate to the best team, and as you have mentioned it all comes down to combinations. I destroyed every team I played with Holah and Braid as my flankers, causing turnovers at nearly every ruck. When i traded braid for Berger, the turnovers stopped happening and I was forced to play a more reserved style on attack as I no longer secured my own ball 98% of the time.
I traded Giteau for Carter about an hour ago and found he didnt suit my style of play at all well. Carter is nowhere near as quick off the mark as giteau as a result my backline was constantly getting caught flatfooted behind the advantage line. I ended up quitting and reverting to my last save- with Giteau still there.
I like the fact that there are a few sure fire ways to catch the defence off guard, and the key in multiplayer is to know when to use which move. Im a big fan of the dummy myself, there are only three situations i have found that the dummy can be effective, but i score almost every time (unless my opponent sees it coming). My personal favourite would have to be my patented box kick chip for the winger, for anyone who hasnt tried it i suggest you have a play around, its easier to execute than a cross kick with a higher success rate, and near the line results in a try most of the time.
I still love this game!