So a quick wrap up here on the obstacles Respawn has to tackle:
1 - Balanced mech v. pilot game play. This has been tried before, never been nailed down well. Most recently by Lightbox with Starhawk. Mechassault 2: Lone Wolf also tried this on the OG Xbox but not as on-foot v. mech directly, and still didn't have great balance.
2 - Movement speed/fast paced first person control. The claim is that the mechs move with the agility of a standard FPS character, with the pilots being significantly more agile. Will the people who rejected Mirror's Edge find proficiency with this new level of first person speed and mobility?
3 - In-game bots during PvP rounds. Most gamers have hated the notion of relying on bots to fill in a multiplayer map. This isn't filling in as much as it's augmenting the battlefield, at least in theory.
4 - Cloud based AI and regional physics management. I'm assuming this means they'll run the bot AI and larger mapwide changes server side as though they were other "clients". Will the zero lag bots be unbalanced as a result? Will they avoid all the server pitfalls other "cloud based" titles have recently fallen into (here's looking at you SimCity, by the same publisher no less).
Anything I'm missing? Respawn has definitely bitten off a lot to chew here for their first new title.