I have never understood why the EU doesn't simply mandate that all appliances be fitted with IEC 60906-1 plugs http://en.wikipedia.org/wiki/IEC_60906-1.
Then produce a design for a system of adaptors which provide the same level of safety as a normal plug/socket arrangement, but are snap-on (semi-permanent). These could be used with Schuko or BS1363 outlets without any major fuss.
Also, the IEC 60906 socket allows for the 2-pin Europlugs to be polarised, by slightly changing their body shape so that they only fit in one way into the IEC 60906 recessed outlets. They would remain non-polarised when used with schuko, but would be polarised with the new sockets thus complying with any countries which require polarisation e.g the UK and Ireland.
Such a system would mean that appliances like laptops, mobiles etc could be carried in a case and used with a single powerstrip in the UK, thus avoiding the need for all these slimed down plugs and other workarounds.
You'd only have to carry a single BS1363 plug.
Actually, I know one guy who bought laptop cables in Italy and uses an Italian powerstrip when traveling to avoid bulk!
He just picked up the italian version of his laptop cable and the rest are standard 2-pin Europlug.