This game needs a "Thief" champion!

I'm sure many of you will disagree with me, but the game is going in 1 direction only, (stun,kill,shield heal), it's getting boring and the state of balance is very complicated at the moment.

I want more diversity in the game, and by diversity I mean to include more competition, rather than just fight for more damage and more heals.

By bringing a Thief champion to the game people will open up to more creative playstyles and new concepts and challenges.

You'll probably ask, what does a Thief do in general (gamewise)?

My answer is, to become a Thief you need the following set of skills:-

1. stealth/sneaky
2. pickpocketing
3. lockpicking/ illegal access to private treasures
4. mobility and quick decision making
5. speech and negotiation

And all of the above is used to obtain more gold and treasures.

Many online games have a Thief character in their heros/characters pool which allows you to take a completely different playstyle, losing certain powers to have better ability to get more coin and become better trader.

Of course in league you can't trade and there's no marketplace etc, still, the game doesnt punish you as well for poor decision-making when it comes to having certain amount of gold. Other games force you to drop loots/gold and even items upon death. I never played dota but I've read you lose gold upon death as well. So why not bring more competition to the game through using skill and by only 1 uniquely designed champion?

I don't have the proper champ design. I'm only suggesting it because I enjoy playing as a Thief in almost every game (offline/online).

But I'd think a Thief would be similar to the following suggestion:-

Passive: gains more MS per level ,gold/ per few seconds. Or Through Thief's power of speech, all items costs are reduced a % amount of gold (scales with level).

Q: next auto attack will deal bonus damage and apply poison ,poison reduces target's damage (if enemy is stabbed from behind he'll be silenced).

W: becomes invisible for few seconds boosting his MS , gains more MS the more he gets further away from his enemy.

E: passive: you gain more AD based on your gold in pocket

Active: shares portion of his gold with his allies.

R(heist)(can only be activated when invisible) : steal a % of your enemy's gold (scales with MS, the faster you run towards your enemy while invisible, the more gold you'll be able to steal)

This may sound broken to most of you, why? Because it's entirely a new concept that requires different playstyle with/against.

It's all matter of numbers. There's an unlimited room for creativity when designing a Thief. So, suggestions everyone?