Looks like Grodd will be quite big (groan) based on the size of the piece in Harley Quinn's package there. They did a really good job on packing that in there.
I can see myself buying the full set for Grodd
Quinn and Aquaman are fine, I'd buy them anyway. Getting a Black Manta isn't all bad, but I'll probably trash the Superman and Firestorm figures outright.
I think we made the comments earlier about DCUC's BAF figures - not happy about some of the figures you need to buy to get the BAF but at least these are only five piece BAFs and not 8 or 10. I do with Metamorpho would have been a bigger figure, but at least it's still realistic in the scale it's in. That the next couple of BAFs are much bigger is great progress.