That’s looking pretty good! Would be great to see some longer videos of it running.

I’ve always wondered how well these methods generalize to different sensors, say with different min/max range, FoV and frequency. Would it be need retraining for a lidar with twice the range?

A colleague of mine did his dissertation on the same topic for mapless navigation. Though that one was based on integrating markov chains with DWA if I recall right.

relies on LiDAR, which increases costs

Arguably cheap 2D lidars are now at price points comparable to cameras, no? There’s a decent selection under $100, from Slamtec, Robotis, LDRobot, etc.