ha! With or without the word 'constructive', it's still telling them what they're doing wrong. I personally super dislike the positive sandwich--here's something swell about you, here's what you're screwing up, and by the way here's another compliment that we both know is a waste of breath because even tho you've told me 2 nice things, the 2 nice things aren't enough for me to leave you alone about the thing you screwed up on. I'd rather just take the criticism and get it over with...