Harris should be returning kickoffs, but not punts... Beasley would be fine as a PR, not great, but at least he would catch the ball... I also would like to see Dez returning a few punts this year... There's no reason why he shouldn't, he's not that fragile, and he's really really good at it! If we make the playoffs, Dez could be a real weapon as a PR... Not to return all punts, but when that situation comes up in a game where you need a good punt return, or maybe the team is flat and needs a spark, it's nice to at least have the option of turning to an elite talent... Dez has the talent to do it, but you have to use him once in a while... Ideally a total 5-6 punt-returns for Dez in the regular season, and situationally if we make the playoffs...
As for Harris, I'm happy with him everywhere else, just not as a PR... He's blocking well, has performed adequately as a WR, and has made some nice tackles on ST... That said, he's certainly not playing his way into any sort of big contract...