That is an ineresting thought...I'm not sure. I've always thought it was referring particularly to the added presence of man as image of God, viceregent who would order, rule, and protect...but the *ahem* beauty of the Hebrew language is that it can mean both things at once and more. It's so rich, multi-faceted, like a diamond...
...and I think it also connotes the idea of fullness, completion, finality: man as creature-king of all creature-kings and their respective kingdoms...man as capstone and steward of creation...*then* it was all put in order and complete...thus *very* good.
But let's not forget that Eve was there too, and surely the mother of beauty, the primal source of all creaturely beauties, was a wonder to behold...so I think all these ideas are wrapped up in that one little added word *very*