Hi, I am not entirely sure what you mean with declined quests not being able to be accepted via the menu. Can you let me know which scene you are talking about? There are 3 scenes, the quest log (view quests you have discovered/started/completed/failed), the quest board (accept multiple quests at once), and the quest accept scene (accept/decline a single quest).
I can add switch tracking to objectives which will complete the objective when the switch is on or off, this was pushed off for a later release because in most cases, when turning the switch ON you should also be able to complete the objective via plugin command in the same place you would turn the switch ON.