I'm not the only one getting Molyneux vibes from this? It sounds ludicrously ambitious.
Yea, it's very Molyneux. No doubt The Benz and his team are massively talented, but titles that promise the world generally end up delivering something that's massive in scope but very shallow in depth.
The fact he's using Amazon Lumberyard is telling on what type of experience it will be. That engine has basically been designed for online gaming, sharing, and streaming. It was pretty clear from his interviews before GTA V's release that he was very passionate about GTA as an online experience, so I'm expecting some sort of open world multiplayer sandbox game with mission/level creators which they hinted at in the interview.
I do wonder if the reason he left (or was outed) was due to a complete and total disagreement over the future of where Rockstar was heading. The Benz was clearly putting his chips on online experiences, where as the Housers always came off as more traditionalists who valued single player and viewed MP as an extra.