Hextech system improvement.
Hello Riots, i've read you article about hextech system and problems with it. 
**The Idea: **make discount coupons dropable from chests. This coupons may be any - specific to a champ and skin, or just to champ, specific by discount amount. Lower coupons may be recraftable to a bigger ones.
Pros I can see here:
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if coupons will drop from chests - you may increase amount of key fragments dropped, because big part of skins and champs dropped from chests will be replaced by coupons.
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Increasing amount of keys dropped will lead to a higher player activity because it's cool to get something instead of nothing.
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You may give increase in skins bought because players who are unlikely going to buy skins on normal conditions may do it with discount and this way they will start their journey in collecting skins.

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You may even invent some system with intelligence distribution of these discounts. (ppl who are likely to buy something will get less discounts)
Thinking of cons requires more analysis and it's hard to predict anything without big amounts of data and statistics. But you have this stats and data. 
Hey Summoners
, what do you think about this possible improvement?