I like seeing others succeed, getting the best they can. Players always talk about wanting more boosts, yet don't optimize their cities for it. That's what gets me involved, thank you.
Perhaps you should talk to the individual players with that complaint then? Because the top 100 probably aren't the ones that think more boost is hard to get
They're the ones that think there's not much point to getting even more boost
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It's not a city full of colossi that's the problem with people who wish more boost was easier. A city full of colossi would help them in fact if it were randomly gifted to them.
Rather it's accumulating things in a cost-effective manner that meet with your goals in every event consistently. i.e. if the one thing someone wants is more boost, they could've gone for a terracotta vineyard (lv 1) + a bunch of chains this event. No it's not the most space efficient option, but it's *very* special-efficient! Say with 15 specials, you could walk out with 14 * 8% = 112% extra attack boost from fields + the pergola from a single event. One day they'll delete them for something more efficient overall - but it's a lot of attack boost *now*.
Chains, Checkmate Squares, Fall Fields, etc - buildings that only have a single level - they're the key to getting a lot of boost in a hurry without a lot of $.
Of course perhaps their goal isn't as strongly biased towards more boost as you indicate. Maybe they settle instead on a Level 10 Fiore Village - which is still not an ideal option but at least on top of ~20-30% defense for their attacking army it gives them FP and a bunch of goods
And that will add up over time too.