I upvoted this post because its very important information. That being said I am rather upset by the contents.

I had reserved judgement on the potions being disabled, and understand those reasons, but being unable to use them on rewards has seriously hurt my daily quest motivation. Now in addition to the possibility of being stuck playing a splinter which is weaker or less fun for me to play, I largely get useless prizes. I don't need half of my rewards to be potions when there is nothing to use them on (I don't earn anywhere near enough DEC to even get my summoners leveled up). Potions and Quest rewards get a big thumbs down from me. The one plus is I have won more untamed packs this season than last, but nowhere near enough to make it feel rewarding.

New cards - That part of the post deserves the upvote at least. New cards are always exciting (even if I am unlikely to ever see them). I enjoy the flavortext as well!

Collection Rating - You are pretty much telling me to quit the game. That is not even a remotely low threshold! My collection power is about 50,000. That means I would be stuck in silver 2 when my actual skill level is that of the border between Gold and Diamond. Unless I'm having a ridiculously bad day, silver 1 is too easy and dull and the rewards are worthless. To me its equivalent to saying you don't want new players or low spenders playing the game and is definitely reason for me to tell others not to play. VERY UNHAPPY.

The problem is not that its easy to get into higher leagues, the problem is that the rewards increase exponentially. Not only do you get more season rewards for being in higher leagues, but the daily quest rewards increase as well. There's a much simpler solution than gating, simply give everyone the same amount of quest rewards regardless of tier. This way its still important to increase your tier for the end of the season but the farming benefit is heavily reduced.

I seriously hope you reconsider your plans and I thank you for the update.