It sorta reminds me of Dawn vs Maylene, if only because one of the main/supporting characters are battling a gym leader. I enjoyed Cilan vs Chilli, buut that seemed more about the brothers, so I'll be looking forward to Cilan vs Skyla. I'm interested in why he wants to battle her in particular, though.
As he is already a train connoisseur, he may as well just call himself a public transportation connoisseur XD But yes, I would like more Iris development, too. I can't decide if they're waiting to bring in something epic regarding the 8th gym, or are just plain ignoring her.