It's a case-by-case basis. Like merl_ said, don't design your game to be speedran, rather design your game to be fun to play and then speedruns will soon come. Never design a level off of an intentional skip, rather, leave it in if it feels intuitive enough for both a normal player and a speedrunner while not entirely put there on purpose. A good example of this at the moment is Vibrant Venture, a game in development right now which has normal gameplay 100% of the time, but also some skips left in for speedrunners to take advantage of if they want to.
this is really awesome! do you think you could potentially make some original ones for the newer characters (asking a lot of you, i know)
hate to break it to you but https://www.speedrun.com/robloxsr4/Bonus_Level lmao
that Ivory guy got a world record for 3 hours and then gave up when it was beat. what a totla noob!