Comment by have_faith

> I was thinking about [the problem] and was wondering if sshd would also work [because of X benefit], what do you think?

I would probably phrase it something like that. State why you're bringing it up (I'm trying to solve the problem, not just criticise your solution), assume they have already considered it, ask what they think about your idea instead of just offering advice about theirs, both options are still on the table.