Wanting to get a specific skin and having to wait each day only to get 4 random skins I'd never buy is a bit annoying. Even a year ago waiting for a specific skin to appear in your shop, you could only hope you will get it in next few weeks, if unlucky it might take months.
Now there is a lot more skins (basically 2 new sets each month), i do not see a reason not to increase number of skins we get in our shops daily from 4 to something more acceptable.. Double it or at least make it 6 skins daily.. Although I don't think even 10 skins daily would be too much.