I would say the leads need the right EQ (maybe cut some lower mids on 1 or 2 lead sounds 270 - 600Hz , but they need to be the right frequencies, for each sound and the combination of the sounds) and different effects, but not overdone. Maybe a little delay, maybe distortion but it needs to be well chosen otherwise it can just become harsh and radically change the sounds. Effects like 2 different but complementary delays that occupy slightly different parts of the stereo image (as a pure example one ping pong and one stereo, one 1/4 note and one 1/8D - experiment and listen to what works, without over doing the delays feedback. Slight panning to opposite sides might help if you get stuck.
AP I think constructive criticism would be more appropriate, no one gets better by being fully insulted. We all start somewhere, my first tracks were not much good.