I don't disagree with your basic premise, but I believe (some? all?)teams have multiple portable paddock buildings, so the teardowns on each are fewer.
Sunday cloudy conditions, you expect them to finish that high? All the possibility of fitting inters or wets because it's raining in lithuania on tuesday.
About that saving 30kg lol -- Exclusive: FIA to trial fitting aircon system to F1 cars Simplified version of air conditioning systems to be tested as part of the FIA’s assessment of F1 driver health scares from the 2023 Qatar Grand Prix, amid Hungaroring temperatures hot topic
Always good to read Joe Sawards latest Blog release - https://joesaward.wordpress.com/2024/07/10/green-notebook-from-aintree/