Riot, will you ever expand the sales to more than three skins?

First, let me thank you for the number of skins you have been making recently. 5.13 will be the first patch since february to feature less than three skins, and 5.2 was the DJ Sona patch. At the moment a skin is discountet about 12-14 months after release (IIRC), but with the increasing number of skins and counting that only three skins go in sale at once, is this time going to grow? Will we get to the situation where you have to wait one and a half years before being able to get a discounted skin that was just released? Or are you keeping numbers under control with the legacy vault?

Are you ever going to increase the number of skins that go in sale twice a week?