You're coming from the perspective that MS needs to sell Scorpios. I don't think they do, just like Sony doesn't need to sell Pros. That's the point of an incremental midgen upgrade: choice.
With the exception of HW2, no upcoming Xbox game has a release window yet. With no more events left until Spring, I think it's fairly safe to assume most of those games will release in the second half of the year and beyond. Even with the current Xbox lineup as it is, I don't think MS will have a shortage of games to accompany the launch of Scorpio. They don't need to blow a huge a load at E3 for that. I mean, they need it for the bigger picture of their business, but not for that particular reason.
And for the bigger picture, I don't think they will need it more in 2017 than they already did in 2016. At this year's E3 they were already in dire need of an answer to Sony's 2015. They had nothing other than Horizon 3, which is great but was also the most predictable announcement of the entire event, State of Decay 2, and another timed exclusive in DR4. It was an absolutely terrible conference considering the heat Sony had been giving them in terms of new game announcements in 2015 across E3, PGW and PSX. Sony's excellent 2016 E3 and PSX, full of Year of Dreams 2.0 stuff, made things even worse, but it's not a new scenario for MS. They've been in this situation for a while now and were incapable or unwilling to properly react. And that's why I'm not very confident they will react in 2017, at least not in the way I think they should. At this point I really believe they will bank on Scorpio to have the best multiplats and hope that's enough to sway consumers.
