Thanks for playing.
Jumps are separated abilities, and there are different seals that modify them. There are also modifiers for Dash, and other abilities.
You can think of jump abilities as weapons in fps with mana being their ammo. Another reason is I want players to plan ahead if they need to switch to a different ability as they are running. It's another thing to keep in mind, just like dungeon layout, room order, door placement, coins and crates, and of course objectives. One might say that's a lot of things to keep in mind, but that's exactly what I am going for.