We absolutely need an Asian antelope, which I imagine will be satisfied at least once if not twice over with this pack. Blackbuck and nilgai are still both individually essential in my eyes, even if functionally they do overlap a bit. The only caprine I'd still stick my neck out for is the aoudad, even if the bighorn sheep stole a bit of its desert caprine niche.
This steady flow of monkeys is phenomenal, but we were still so far behind the curve that we've got a ways to go still. I said as much in the DLC thread earlier, but I still need at minimum 5 more monkeys before I'd consider us good: a tamarin or marmoset, a spider monkey or howler, a squirrel monkey (functionally redundant with the capuchin, but way too common and iconic to overlook), a guenon, and a colobus.
I think mustelids are probably good now. I'm a huge fan of small mammals so I'd welcome basically any further additions, especially new world ones (personal order of priorities: North American river otter, tayra, sea otter, a marten species, black-footed ferret, American badger) but I think the honey badger was the last truly notable omission from an unbiased standpoint... though I also think a case could maybe be made for a temperate/cold otter.
Elephants were already at capacity on day 1. A hyrax is still more than welcome.