I'd love to see Shaco become more useful late game in a trade off with toning down his early game.
Get rid of crit from deceive and make it a massive bleed (like 100 at rank 1 and 600 at rank 5) or make it true damage bleed like twitch's passive.
Give him good AD scaling on his E and R explosion while giving a stealth mechanic for a couple of seconds after he presses R so people can actually be fooled into actually hitting the damn clone. (seriously guys, it's not hard to tell the real and fake shaco apart).
Nerf base damage on early ranks of Shiv.
You could work around his kit like this but if you change anything about his kit (which you will because his kit is purely early game and split pushing late game), he won't feel like shaco at all.
Which reminds me do Shaco clones still retain item effects? Like Sunfire and Wit's End.
Yes. statik etc.. all work