Daily Bonus System

So I've been thinking, wouldn't it be awesome if a daily bonus system was added to league of legends? If your wondering how it would work, I'll explain everything right here on this discussion.

Rewards

For the rewards I would suggest things like little bits of IP for players lower than level 30. There could be more, better rewards for players that have higher ELO and login daily in a row. This would encourage players to play the game more often and really strive to reach the higher ranks. These rewards at higher ranks could include, little bits of RP, key fragments, maybe even a gemstone!, and some newer items that could be exclusive to the daily bonus system (such as new hextech materials). Of course there could be MUCH more creative rewards but I'll let you guys comment some ideas :P.

Cons

Of course there are many cons in this system. The major one being if riot could be so giving xD. This might not be possible because riot is already giving us events and giving us a daily bonus system might hurt the money they're gettting from people paying for RP. Obviously if they don't want rp to be a reward they don't have to put it in there, hextech crafting materials and little bits of IP are more than enough.

Pros

This system would encourage more players to log in daily and play ranked more often. It would also make Riot look even more generous XD. It would also give us ways to get key fragments and chests more easily (I spend like 10 games to get 1 key fragment ;-;).

In the end, this probably won't happen but it's a fun thing to dream about. Comment down your opinion on this system and whether or not you think this might be possible!