I mostly agree, but will note that I find "head and friends" unobjectionable and sometimes convenient at the ghci prompt.

I think the right solution ultimately might be different preludes geared to different things, though doing the right dance around making the right things available in the right places (and unavailable in the wrong ones) while also making it easy to understand (and remember) which context you're working in and also not splitting the community is going to be... delicate.