Obviously getting the AAAs on board quickly and easily would be the fastest route to success, but if the likes of Monster Hunter and Shin Megami Tensei on the big screen can sell systems THAT will have the knock on effect of encouraging AAAs.
This might not be the ideal for those who want AAA support out the gate BUT can we please stop pretending like they don't exist and matter? It will have third party support that has a decent chance to snowball, even if it isn't the third-party support people want out of the gate. 2018 will be the truest test.
Discussion started at here by Twilord_