Yeah, I also found Leftovers for him, so I've been helping out. Nothing worth posting in the discoveries thread though. And yes, finding this stuff underwater is evil especially with no grid based movement.
Everything that needed fixing got fixed, and I'm glad about that. As far as I'm concerned Delta Episode makes up for no Frontier. The plot of it was so good, even for a Pokemon game. The music in Sky Pillar onwards is incredible too, it was an amazing end to it. As good as Zinnia's theme is though, the Emerald Frontier theme is my favorite in the game. Wally's theme on its own isn't incredible, but with that background and considering his rise from nothing it fits very well. Way better than a generic battle theme or even giving him May/Brendan's theme.