As you haven't played much, you might not realized this, but the dash is intended to be a complementary mechanic and it's almost never required, also it would break the leve design if you could dash in the air all the time; however, you can actually dash in the air using the super dash. Removing the jump button would be a little too drastic, it would require me changing the level design a lot, if you play more, you might realize that. I'm glad you had fun playing the game tho!