I'm usually pretty busy being single target focused and all. It's the same solo or in team settings.
Seems like it does more.
Would it fill out an optimized attack chain for a noticeable bump? Dunno.
But if placate provided on-demand crits for an AoE.. that might be overpowered.
I'm not against a tweak but do keep an eye out for power creep, hence my comments. There are likely scenarios I am not thinking of. Placate is a signature power for my main character. I like getting in over my head and having to brawl my way out. Placate helps in various ways. As a pseudo hold/stun, return to hide-like status, as a crit creator, and as a setup for a finishing move.