Quick thoughts on Roadtrap and Battleslash:
Battleslash isn't so bad. Helicopter mode is just convincing enough, aside from the big socket on the front, but I'm sure it could be explained away as a canon or something. Bot mode isn't terrible, proportions are alright.
Roadtrap is every bit as fidgety as Legends Wheelie in vehicle mode. You get a side panel in place and the back part splits, you get that part together and half the front window pops up. Pretty frustrating even with the built in locks inside the front wheels that are supposed to keep everything together. Bot mode is alright, his legs look stumpy thanks to the windows, but standing him next to Bumblebee the leg joints are all in the same place. Annoying alt mode aside, he's OK.
Their vehicle interaction with Prime Masters is very questionable since they can only sit with their knees bent the wrong way. Feels more like they were meant to be powered up by the PM spark modes rather than ridden by the bot modes.
As Battletrap he's pretty nice. Hands look awkward, but not terrible. He's free of kibble which is a huge plus when compared to
Centuritron (the closest thing to Battletrap in Generations). His knees are fine, they're covered and go further down his leg than they look like they do in pictures. I'm not crazy about the official transformation of his back so I like to reassemble the top of the helicopter on his back keeping the propellers functional, though extended on a pair of bars, but I like the way they can be pivoted for hovering and such. I'm happier with him every time I play around with him.
Really looking forward to Flywheels and optimistic for a potential Landcross in the future.
Emerje