I should have quoted something. What I take from what I'm reading, correct me if I'm wrong, but is population from event buildings going to go down, and we need Blueprints (or something) to upgrade stuff? I mean, my fellowship only gets 4 chests regularly, I have never even seen a Blueprint, ever!
I think you're wrong, or at least you shouldn't be worried. There's 2 parts to your statement. First, population from event buildings going down? I'd say no. Now, the main prizes of sets have been geared towards things other than pop/culture for about a year, so arguably population is going down. But there's still lots of daily prizes that give population. See this year's Winter Stars, which might be the best pop/culture building to date if you really want population.
Second, you need blueprints to upgrade? No. If you have blueprints, they will be converted into Royal Restoration spells (which can upgrade a building). Blueprints will cease to exist, and those RR spells will be sprinkled throughout tournaments (not just in the 10th chest) and will probably be available in other places (crafting, adventures, mini-quests, events). So if you're not a 10-chest fellowship, you went from ZERO chance to upgrade event buildings to lots of chances to upgrade event buildings.
So if you're not a power-gamer getting a blueprint a week with 40 blueprints in the bank, these changes make you happy!