Am I the only person who thought that Lost World had a pretty good system, it was just the level design that made it not feel very fun to play? I'm kind of hoping that the third gameplay style ends up being a revisit to Lost World's mechanics. Hear me out. We were told that we'll be getting three gameplay styles. Sonic Generations has shown that they can do a really good job at the Boost gameplay style, so we're relatively safe there. Classic Sonic is heavily implying that we're going to get some 2-D levels like before. The physics weren't really there last time, but I think that Sonic Team can do a passable job. Remember how Generations ended with Classic Sonic getting the idea for the Homing Attack by having watched Modern Sonic do it, resulting in a sort of stable time loop in that regard? If we can't get Classic-style physics in this new game, I wouldn't mind a Tag-Action-removed setup like Sonic 4: Episode 2. Just tone down the Spin-Dash a bit and maybe let us have the Elemental Shields as in-game collectible power-ups instead of how Generations did it as equipped items. Lost World parkour could potentially work as the third gameplay style, and be a relatively safe way for Sonic Team to continue tinkering with the idea. Remove the Super Mario Galaxy-esque level design, and give us some more realistic terrain to maneuver around. Justify it with an opening shot that scrolls backwards along the level a short ways towards Sonic, with Sonic having an expression or saying a quip to give the feeling of "Oh shit, there's not enough room for running speed. Now what?". For instance, an area of the opening city where we see the buildings and rubble too close together with no open areas to run. Just balance the amount that players are given. Don't make it as heavy as the Werehog in Unleashed. If Sonic Team wants to go ham on some crazy level design and really push the limits of what they think they can do with the parkour system, make them optional levels that we unlock as we go. Another idea could be since there's three styles of gameplay, that we only need to pick two of the three per Zone to progress. Imagine if the Missions in Generations were set up so that you could either to 3 Classic and 3 Modern to move on, or you could do all 5 Classic OR all 5 Modern missions, assuming they keep the Mission progression. Something like that could make it so that if a certain aspect of the game falls flat, it can be ignored by the player and the game is still enjoyable. - - - - - Off-Topic, but now that I'm thinking about it, just like how the Unleashed Day Stages were ported to Generations, I wonder how well the Night stages would port to Lost World. I should look into that.