I voted no proper English should be used as I think for the younger generation they go online and find a lot of words they have spelt in the past IE: COLOUR or RECOGNISE and they see it change or underlined as the software they are using is US and obviously spelt different in the states.
I think it would be easier if all used the same spellings, never going to happen but it would be easier for the education of the future generation, we know the differences but only because when I was going through schools internet and computers with US software were not available or maybe didn't exist. So we learnt the way we were taught in schools and through the books which were 99% british spellings.
On the other hand I think a lot of US spellings make more sense than the English versions again Colour is Color in the US simpler and easier.
On things like in the US the Bonnet of a car is called a hood makes no difference they both refer to the item covering the engine or motor again a different version of the same thing, It is just like regional differences in the same country over here where I live in the centre of the UK we call small individual round bread baps but if you travel only 60 70 miles north and ask for a bap you will get looked at like you have 3 heads and they won't have a clue what you mean, They refer to them as barm cakes! There is nothing cake about a piece of bread regardless if it is round square or rectangular.
I can say the only two things which makes me smile and think behave dopey is when Americans pronounce the word Jaguar when referring to the car brand,
It is often said as Jagwarr when the manufacturers named it Jaguar JAG-YOU-AR is the correct pronunciation.
The other is Aluminium and aluminum as I already said regional differences etc but it just makes me smile and think that's wrong when I here the US version.