I'm taling about what sevtech does, where paths, bricks, etc. give you a speed boost when walking on them, with better materials being given faster speeds. it would be configurable so we can add own own blocks from others mods, but have grass paths as the example start. this speed boost should stack with the potion too. it would allow for a faster way of travel without feeling cheap like teleportation or nether highways, as someone need to be there first to set up a path. could also be good for map creators.