Our personal workflow is to make everything in Max and Zbrush, so we haven’t even begun to dig into landscapes yet. I have some free time this week though, and I will see what I can see. However, if it’s not exposed to blueprints, it most likely can’t be done. If that’s the case, there are two options: request the feature to epic and when it’s implemented we’ll get right on an iTween solution, or wait for the C++ version of iTween (which will be a while, since the blueprint version comes first. If we can make it happen, we’ll make it happen!
Regular splines are already supported! You can move to a location on a spline or rotate to look at a spline point using iTween. I know it’s probably not extremely clear how to do that, so be on the lookout this week for more tutorial videos.