There is several games that close the game on occasion to do stuff. It is mostly a console thing and is called save and quit. Like in some rpg games if you save and quit then continue it warps you back to a default location for example the start of a dungeon. These games usually have any% with s+q and without. So yeah just closing and opening the game in a normal speedrun should be totally fine.

Chapter/Level Leaderboards would be neat. So you can post them with video proof and not just only have the ingame leaderboards for it which can potentially be hacked/cheated.

Done.