It would be great to see Europe adopt it as well. Changing clocks twice a year feels outdated and more disruptive than beneficial.
It was proposed officially in 2018, but unfortunately the decision was never finalized:
https://www.consilium.europa.eu/en/policies/seasonal-time-ch...
Absolutely not. The time that would stay is the bad one.
With switch, we get reasonable half a years. Without it, it would be whole unreasonable year.
I don't like switching to daylight saving and back but I'd rather have that that permanently moving to +1. Then you have extreme examples which are already shifted like Spain (for historical reasons around aligning with Germany) and I don't find that alignment useful economically, in city life practice and more.
If had to make an executive choice with no further analysis at this moment I'd put them all in their respective original times and move Spain and any outlier to their proper timezone (a vertical map alignment of sorts)