Do not let collaborators put a biosketch that is not in the correct format in your proposal. We've had the new format for at least 2 or 3 cycles (I've lost track...). It does not meet the meta-criterion of making your reviewers advocates for your grant.
Update (I better call this one, there are quite likely to be more) 1: I still hate right justification, it makes it hard for me to read. But really, right now I am very irritated by numbered references. There are a couple that I want to check. Grr.
Update 2: Do NOT ever ever use emojis, clip art, or handdrawn diagrams in a proposal. Further, every figure included should convey significant amount of information, more than that words would do in the same space.
Update 3: Holy Cow.
Leave some white space. If you use the smallest font and the tiniest margins and no space between paragraphs, I feel swamped by enormous blocks of black text.