It doesn't take much to get a list of trophies long enough to fill up a plat list with points. The best example is right
here.
The people who make cheesy easy games that are just trying to grab a buck are the ones who are really missing the boat if it really is up to the devs now. While the trophy hunter group may be small, they would get a ton of sales from people looking for the latest easy trophy grab.
I think I should start a dev that makes 1 hour long platinum games for Vita. Put about 50 of them on the store at once for $4.99. Since they can't be game shared like others just sit back and watch the profits roll in.