I though of these things that could be usefull
Bricks
"Corner" Brick: A "2x1 with a 1x1 tall" like a corner only only 1 corner hmm like 3 1x1 tall bricks in a "V" shape if you know what I mean :P
1x5, 1x7, 1x9, 1x11, 1x13, "small" bricks: You know what I mean like the 1x3 smalls it would be usefull
Vehicles
Jet: Spawns vertically starts flying into sky with tons of smoke and jets at the back can turn once off lift off pad
Dragon: Mount able animated wing only in air when on ground wings stop animating dragon keeps in air if dismounted in are
Mods
Sword Parry Mod: Parry with sword/other sword like items when hit at same time so you don't die at the same time good for RPGs
Shield: Blocks bullets/sword hits when up can be with sword cannot fly with shield right hand mouse button is the shield block other wise you can get hit
These are my requests I may add more