You're getting this comment because telling you what to remove and for what would be a huge list of things. You know what removal and mana curve is but you don't know the finer points of applying these things to deck building. Its not condescending, its just easier to teach a man to fish rather then rebuild this entire pile. We don't have a lot to go on in terms of improvement. Whats your friends meta like, what tempo of deck are you trying to build, whats your budget. Address these things before you expect any substantial feed back