An Alternative to Gemstones for Exclusive skins.

Recently it was announced that another new hextech exclusive skin that would require ten gemstones to unlock would be released. I do play every role and about half of the champions in league, however i have found a special place in my heart for Vayne and would consider her my main see these 2 images for proof http://imgur.com/YrPcvGr http://imgur.com/Rv7Nybd

Being a Vayne main and being fairly good at her, (Im no Hi i'm Gosu) I own all her skins and take pride in "having a complete collection of all of her in game materials" and I would like to own Soulstealer Vayne when it is released, however, I know for a fact that to get it i will need to A Spend 300 to 500$ on hextech crafting, or B get REALLY lucky and pull her as a skin shard. My personal idea is that if somebody is super designated to a champion and owns all their skins, including legacies, and a mastery level 7 on that champion (and/or maybe something like 250,000 mastery points) then they should get the hextech exclusive skin for free (or have the ability to buy with IP/RP). That would mean people like Me, or Annie bot, Shaclone, or others like Malicious Metal who spend a lot of their time on one champion would not be denied the 1 and very exclusive skin they didnt own if they wouldnt or couldent spend 300 to 500$ trying to get 10 gem stones. (I know and dont have an exclusive skin but if they did it would be people like Shaclone and Malicious who would be stuck in this situation)

Having this system in place COULD also be beneficial to riot as it encourages players to A: Still buy skins and thus makes them money, B: Play competitively and play a lot (as they would need to be mastery level 7 or have a large quantity of mastery points), and C: would improve player satisfaction by giving people who are probably most deserving of the skin the ability to easily obtain it (you gotta admit it was sad seeing Annie bot buy set after set of Hextech chests and still not get Hextech Annie until he had spent over 300$).

As a note: Heartseeker is 975, Arclight was 975, SKT Vayne was 750 (and legacy) DragonSlayer was 975, Vindicator was 520 (and Legacy i think i cannot remember), and finally Aristrocat vayne was another 520. Including the Dragonslayer vayne chroma at 590 This is a grad total of 5305 RP or a little over 35 US Dollars. Soulstealer vayne would cost around 300 to 500$ to get if i wanted to collect 10 gemstones.