I think the "interactive paper" vision is very different from the "ipad" vision.
I wouldn't call the RM2 interactive paper. It's digital paper. Remarkable has focused their device to that niche and I think that was very smart of them. It's all about e-ink, crazy battery life, no distractions. I know a lot of people want more functionality - especially in the reader area, drawing apps, and calendar functions. So far Remarkable has managed to stay focused on the core functionality and I think the longer they can remain focused, the better off the company is. Every feature they add is something they have to test and maintain forever and that's a lot for a small company to do and still sell the device for about $400 (which is a bargain IMHO).
What I'd like to see is a bigger option. It would be nice to have at least a full A4/letter size screen. It would make dealing with PDFs a much better experience.
Sustainability. The device isn't for everybody. The constraints are features.
Sounds like you want something more like an iPad.