This isn't foreplay. No one has time to read the tea leaves of someone else's "subtleties" and murky language. It's a waste of time and cognitive effort. Directness is a virtue. By directness, of course, I mean clear language that is to the point, not aggressive and disrespectful imposition. If you need something, then that's what you should say. The answer should likewise be direct. Yeses and noes, and because.

Common sense is one thing, as we don't necessarily want to have to spell everything out (and even here, there generally exists a space of reasonable difference of opinion and approach, and mutual familiarity also breeds implicit context), but it is uncharitable to put people into a position where they must constantly strain their minds to try to determine what you need, only to punish them for failing to meet your preciously specific and indeterminate expectations. This can quickly become abusive, not to mention annoying.

To wit:

  Make definite assertions. Avoid tame, colorless, hesitating, non-committal language. (Rule 12, William Strunk, Jr.)

  Let what you say be simply ‘Yes’ or ‘No’; anything more than this comes from evil. (Matthew 5:37)