I'm trying to measure engagement per product and I'm spinning my wheels a bit. Goals seems to be close to what I'm going for but "engagement value" is a one-dimensional metric when what I really need is something more like the ability to measure engagement with product_1 and compare that to engagement with product_2. Any ideas on where to look to set up a structure like that?
I intend on comparing these values to decide which product should be promoted on the front page of the website when the user returns in order to help them pick up where they left off with greater ease.