I was kind of disappointed that they didn't do anything cool with the Undertaker. It's probably impossible to change now, but I thought a "Streak multiball" or something would have been interesting. Before it starts, the table could do a cool light show for it (go dark basically as the gong hits).
Also agree with you on MITB. I think ideally it would have had a button on the apron and be used like a VIP pass. But since it doesn't have the button, it'd be nice to see it implemented in another way.
I love the layout of the table. It's different from what we've been seeing released these days. But I feel like the code lacks creativity that this theme should be prime for.