Re: 2. In sports and competitive gaming competition is about proving skill, not adaptability to a random location.
You tell me a sport where you don't know what the playing field will be?
Or an esport where they don't always use the same maps over and over?
Well he is not suggesting completely new maps but rather an extended map pool from less played ones.
-Football/Baseball/etc have specified parameters on their fields but their dimensions can change drastically. Outside of training in your own stadium, you can't really practice on opponent ones or have a say on the state of grass (long, watered, etc.)
-Endurance type of sports: like marathons or open sea swimming, where weather plays a big factor.
-Recently i heard that on Kayak (the Olympic variation with flags) you receive the circuit field 1 day prior to competition.
-Surf/Climbing/Sailing
SC2 tend to have a bigger map pool which has change way more across the years. The design and type of maps been played has completely changed compared from WoL to LoV. As you say, they look way more symmetrical but the small difference on such a competitive and studied game allows for variety of strats.
WC3: while symmetrical each map plays completely different. From having different amount of mines, to size, location and type of mercs, random item drops, etc.
Maps are not balanced perfectly accordingly to all inter-matches and there's no "2 sides". Everyone play the race they main.
OW: i think they use the full map roaster.
PUBG/Fortnite/Any BR: yeah, a single map. But "not adaptability to a random location." doesn't apply. Random loot, random circle.
AoE2: i guess this is the epitome of "adapt" to the map you are given. While you have a type of seed for a certain type of map, players have to scout and adapt accordingly to what they are given.
Can they fish, can they find all sheeps, boar, gold/stone location? What about terrain elevations? How protected is the wood? Relics?