>>50088562(4/???)
A lot of BW's distribution issues still stand in BW2, but aren't as noticeable since the pokemon selection was greatly expanded. However, there are some issues it had that BW didn't.
Seeing as Fearow was available in BW, Spearow should've been included as an early-game bird to serve as a viable alternative to Pidove.
Route 19 should've had a proper rustling grass pokemon, and seeing as the Jigglypuff line wasn't available until the postgame despite being in the regional dex, this would've been a good spot for Igglybuff to fill.
There are no pokemon with a type advantage against Poison available before the Virbank gym, but the gym's not exactly hard so this issue is negligible.
Virizion and Terrakion were moved due to the player's inability to access their previous areas during the main story, but there was absolutely no need to move Cobalion out of Mistralton Cave. The area clearly had some more thought put into it since it was retextured and made to link up with Clay Tunnel, but its only real purpose now is to be where you find Axew and the TM for Rock Slide.
Wellspring Cave has pretty much no reason to exist now, yet the devs placed Uxie in the middle of Nacrene City. It would've been a much better location for Uxie, since the lake trio were previously found in caves.
The Marine Tube has no reason to exist other than being a graphical showcase (for an already-outdated console), since it's supposed to be a "faster" route between Undella and Humilau despite the player having access to Fly at this point.