My feedback for this event:
RNG on what ingredients you get (You're guaranteed a certain amount but I mean via dailies and incidents.) and RNG on what ingredients you can spend equals high chance of getting locked out of what you can bake near the end.
Ingredients are so expensive (150 gems for literally 1?) compared to the bonuses you can buy in other events is extremely bad. Even if you aren't F2P, that's a LOT of money because most everyone I see, including myself and every one of my friends that play this, are MANY MANY ingredients away.
I thought it was mentioned with the removal of surprise boxes the events would be balanced for that, maybe I'm wrong, but this ain't balanced for that. From what I see here, in my guild, in my friends list, if you aren't rich enough (either by having a bunch of farms or with a credit card with room on it) you cannot max out this building. If you can't get in the apprenticeship league, which seems to be quite difficult this year, you just don't get the building.
I'm 5 points away from being pushed out of it, and there's still a few hours left for the last minute people to throw me out.
I play this game with 3 IRL friends, literally none of us got the lvl 9 building, only 2 of us are in apprentice with hours left and we're barely there so will definitely be pushed out and to top it off, the building isn't even that good.
Not only is the building near impossible to complete, the daily rewards were quite awful. Sentinel outpost, stage of ages, and a kit i forget the name of that's basically just a 3x4 stage of ages were the only three things semi-worthy of even looking at. There was nothing cool like the knights pavilions, nothing really good like the governors villa or crows nest. Plus the main prizes were also bad, slightly better with the paid track but even that track still isn't that good, not remotely worth the diamonds.
My opinion is pretty negative of this event overall. Bad daily prizes, bad main prizes, and a bad building you almost require to spend diamonds on to complete. And it isn't even accompanied by a fun mini-game.
If this is how you want to move forward, with no surprise boxes, please Actually balance it to make the final level possible to get without multiple cities or a premium credit card. From what I see on the wiki the next building seems decent and I'd actually care to complete that one.
At the very least make the dailies and main rewards worth it.