Now this is a forum i am starting to like. Exactly the kind of advice i am looking for. I'll explain the gameplay concept to give a better picture of what i am planning. The game revolves around the player trying to reach the farthest distance while avoiding danger and having fun smashing & launching different types of obstacles in the middle to clear the way. There won't be much jumps/gaps, very few here and there which will match the stage/terrain. The terrain itself is not random, it will follow a loop of various stages each with its own theme(aiming for 6-7 at the moment), but each stage will have its own type of obstacles and dangers, once you complete a run trough all stages, you'll reach the first one again but the difficulty increases and here's where the random scenery OBJECT placement comes in place, the challenge comes from the individual obstacles that will be generated in the stage, not the platform terrain.
Each terrain will also have specific specs, the reason for the interchangeable characters in-game. You'll start off with one character but will unlock others which will help you reach farther each time with more ease than before since some are better suited for a stage than others (the so called "abilities" of mine which really are just varying gravities, speeds, and different object smashing capabilities/strength). But of course, you'll have a limit of about 2 additional characters to carry with you of about 6-8 in total (unless you get the full version ;) ).
Power ups will be pick up items that will get you into different types of modes, perhaps one will get you beserk and smash everything seemlesly for a while or another gives you more inmunity to dangers or stage specs. I'm also hoping for collectible craft items to create handheld objects to smash and break objects more easily and fun.
That's the big picture all put together, looking forward to hear opinions. Thanks for the feedback!