Accreditation is weird. I lived with some engineers at university and they had a huge range of interesting courses they could choose. In physics we had mostly core modules and a smattering of electives.

I asked whether they could take the courses they liked (eg mix a bit of civil, mechanical and electrical) and they said in theory they could, in practice nobody does because your degree wouldn't be accredited. And no accredited degree, no job in engineering. I think for civil it made a bigger difference than the others.

I always thought that was quite sad, since the mathematicians did whatever the hell they wanted between maths, engineering, CS and physics and still ended up with a maths degree.