His ult has been blocked several times by things he is supposed to be able to jump over
Like what? Never had this problem.
his blood trail doesn't always have him running
If you're in combat at all, you won't run. It does seem to be somewhat buggy though and could use fine tuning.
his E takes effect late, fearing the opponent after their attack and not on time
That's just a timing issue on your part I think.
He is being thrown off by trapped opponents after he R's them, I pressed R against singed and when I caught him, he was able to toss me still.
singed probably used his E before you ulted him, so the animation started before you hit him. I had this happen when playing against a cassiopeia before and had to watch the replay frame by frame. Her ult animation started 1 frame before I hit her, so her ult still went off.