Olt has a legit middle of the order production bat. But I tend to agree with you about the defensive thing. He is supposed to be a good defensive 3rd basemen, but supposedly not bad in the OF either, but I'd rather not get prospects that we are forced to move into another position - especially if it is an outfield position in a place like Citifield.
Although he might have decent skills set in the outfield in terms of catching what is hit in his range, that range may be limited. It is not an idea situation, but I also would not totally reject the notion.
But we do already have one 3rd basemen in Flores who is without a true position right now, so who knows, maybe they expand the deal and package Flores with Dickey, and we get back Profar + Olt in some sort of bigger package trade. ???