I decided to consolidate my thoughts on recolours for shinies here in regards to conversation you guys were having into bullet points.
1. I want to see full arts gone. Period. The regular EX cards are fine enough, full arts tend to be lazy as and a waste of a slot much like Rainbow Rares were.
2. I do believe we need illustration rares and special illustration rares of shiny Pokemon; however, I think that like WPM said, there needs to be SOME limits. Too much of a good thing is a problem.
3. I want to see a continual trend of illustration rares and special illustration rares dropping in price due to the commonality of them being pulled. While too much of a good thing is still a problem, I also would much prefer my hobby to be cheap. Look at base set cards, a booster box could pull a lot of the cards from that set; compared to a modern set where a case probably won't complete a set. Let the age of cards be the appealing factor to those looking to invest, get rid of current modern price hype.