100W 3ph fan is ridiculous. I think the German way - <3600W -> 1ph, >3600W -> 3ph is quite reasonable. I absolutely hate the thought of running 4 or 6mm2 wires to cookers, 5x2.5 is far easier to work with. 20A radials are a bit too hefty for my liking, 13 or 16A is quite ok. Again we'd need 4mm2 for 20A according to our regs. Ring circuits are far too complex to be safe with all the botching going on, even by licensed pros.
Schuko plugs have a good and a bad side. On the plus side, they won't ever fall out of the receptacle, they're safe because they're recessed, and if you're used to them they don't even look bad.
On the minus side, I recently nearly broke my arm trying to pull out a plug behind my desk. The receptacle is rather new and very strong, so it sometimes takes a lot of force to get out. I've seen more than one surface-mount Schuko receptacle hanging by the wires.
