Use the distance snap. The spacing is a big problem 'LEEEEROOOYYY!' difficulty. Repeating sliders several times isn't very fun; try and use multiple sliders that curve in patterns. You can temporarily set the BPM to double to make it more interesting if you want, but don't keep it on after the sliders.
I don't like that giant 'J' slider in 'Let's Do This' difficulty. Sliders that look like stuff are an intuitive and interesting way to map, but this J lasts far too long. The repeat isn't helping, either. Try making small 'L' and 'J' sliders. Also, the way you made the 'J' is too confusing for an Easy or Normal difficulty, make it look more like a fishhook next time, so it doesn't go backwards on it's own track.
I don't like that giant 'J' slider in 'Let's Do This' difficulty. Sliders that look like stuff are an intuitive and interesting way to map, but this J lasts far too long. The repeat isn't helping, either. Try making small 'L' and 'J' sliders. Also, the way you made the 'J' is too confusing for an Easy or Normal difficulty, make it look more like a fishhook next time, so it doesn't go backwards on it's own track.