I'm not a planning guy but I work in a closely related community so I'm a least somewhat familar with the area.

Looking at the first paper (https://arxiv.org/pdf/1707.06170.pdf), it seems surprisingly shallow and light on details. So they have a learning system for continuous planning. So what? The AI Planning community has been doing this for ages with MDPs and POMDPs, solving problems where the planning domain has some discrete variables and some continuous variables. Here's a summary tutorial from Scott Sanner at ICAPS 2012: http://icaps12.icaps-conference.org/planningschool/slides-Sa...

Speaking of ICAPS: this conference is the primary venue for disseminating scientific results to researchers in the area. Yet the authors here cite exactly one ICAPS paper. WTF?

My bullshit detector is blaring.