On 8/16/2018 at 1:22 AM, GreenDragoon said:and I don't even know if that's possible to have 2x R2 and 1x R2D2 with just core+conversion?
You can actually fly 3 R2s and an R2D2 with just core + conversion. Core comes with R2D2 and an R2, conversion has 2 more R2s. So yeah, that would be an issue if you want to fly quad regen Y-Wings or similar
16 hours ago, WickedGrey said:The new core set has new rocks (both kinds), so I presume that the old rocks are no longer valid.
This is incorrect. The devs have repeatedly stated that all (non-epic) obstacles ever issued will still be tournament legal. They include some in the new core set simply because new players will need them. Also of note: the ones in the core set are reissues of previously released obstacles (they called it a sort of "greatest hits" collection).