I would like to recommend a new category to Fusion, a randomizer run. I am unsure if you would like to set it up as per seed or per level, but there is a randomizer that works very well called MFOR, I just ran it and beat the game on level 0 randomizer in a hour and 45. https://forum.metroidconstruction.com/index.php/topic,5376.0.html
I second this, even thought it's been awhile. When randomized, Fusion has some seriously creative problem solving in the form of routing. There could easily be a category for a random seed, and I believe it would receive a great deal of attention from runners. I don't think it would be too difficult to regulate a randomization category in general, and I believe it would have a significantly positive impact within the Fusion speedrunning community. This category would help reveal how golden this game is from the perspective of mechanics and level design.
I would love to give that a try, can have separate categories for set seed and random seed like minecraft does.