On that first question, it seems from what was shown at NYCC we're going to get decent accessories at least through the final wave of 30th/Renegades figures. I think the only one that changed at all was the Snake Eyes that's out now. He was shown at the GI Joe Convention with the accessories from the comic pack that were included with SE and the Hard Master. That's missing from the actual release.
Oh, and Scarlett was shown with some accessories at the Joe con but they weren't with her at SDCC or NYCC. I'm not sure if Hasbro has said anything about that, or if they've been asked, but it would seem odd to take something out of her package which would really make it seem like you're getting less of a value there. Especially when you could drop the extra head and weapon from the Law and Order set, maybe drop a a tool or two off the Techno-Viper or the second head on the Cobra Trooper to allow room in the budget for two or three more accessories for her.
Also, we did see Hasbro pull some accessories from a couple repacks, too. Not that they were missed, but the repack of the Cobra Trooper and Iron Grenadier in wave 8 (or wave 2 of 30th) were both light at least one accessory from their wave 7 release. The Trooper dropped the barbed wire piece and the IG was missing that folding stock rifle that the Para Viper originally came with. Those two pieces weren't really missed, I don't think. The barbed wire was decent for dios, but that rifle was one of the worst weapons I think Hasbro has ever cranked out.