All this info is very exciting. It wouldn't be called Abe's Oddysee HD if it wasn't a remake of Abe's Oddysee. That would be exceptionally cruel.
Making Oddysee and Exoddus at the same time might be tricky, but then, they use a lot of the same engine. Imagine Flying Sligs and Blind Mudokons in Rupture Farms
Imagine if sligs had emotional states? Like if you threw a rock at it to wake it up, it would get angry and turn red. If you get two angry Sligs together, they could start fighting!