Yes these are small detuned engines. Using E20 I assume makes running at higher throttle plate opening possible which reduces pumping loses on the engine . Personally I would try a hot air intake first.
I think of it only for the rich. If someone has energy after work to use the extra daylight they are probably rich. I for one need to rest after work and have to block out the annoying sun.
You beat me to it, the tidal effects would tear you apart. You can shield radiation, you can't shield gravity.
I will never find a job fixing things because no one wants that done. I still can fix my own vehicles and anything that breaks down. My lawn tractor is as old as I am (46). I fixed a free DSLR camera and used it for years. Everything is still fixable and some things are worth it if is was gotten free.
At least in firefox for I, it is a single middle click in the tabs bar to reopen the last closed tab.