You know, it would be actually nice to practice.

And by that I mean inviting a friend into practice mode with me so we can fight against champions we have trouble with and experiment with combos. Like, I have trouble with Zed, but I wouldn't if my friend who plays him could come into practice mode with me and I could learn to dodge his combos or prepare for his ult instead of either A) having a real game with a zed player who obviously won't wait for me or slow down so I can practice or B) go make a custom game and wait until my friends cooldowns are up (especially ultimates). Not to mention mana consumption and how items effect damage, etc.