This is my straight up answer with absolutely no bias concerning Dunn, because I have none towards any player. I will call it as I see it.
Even if Dunn were to eclipse the seemingly 500 HR mark, I don't think that merits him enough to get the call to the Hall. The only other stat that I can see in his favor is his .366 OBP.
On the flip side, to me he was viewed as an all-or-nothing swinger in that he does hit HR's and mammoth ones at that, but averages 190 plus strikeouts over his career, and a poor .238 batting average to boot. Those are not going to improve with age.
The clinching factor for me is that he has been in the league for 13 years, and has been an all-star twice. Not good.
I know you were quick to rule out Soriano a while back, but he is only 34 HR's behind Dunn with a lifetime .272 AVG, 60 less SO's per year on average, a 7-time All-Star, could steal bases in his prime, and was a 4-time Silver Slugger award winner.
I think Soriano's stats are even better than Dunn's for the Hall, and I don't feel Soriano will make it either. Just my opinion of course.
opcorn: