Yes, bulk imports are supported. You will need to download them from GOSLogger first though.

https://wanderer.to/guides/import-export/

Currently no. I really like Dawarich for this purpose and I feel like I wouldn’t be able to add much.

Thanks for promoting wanderer! Finding trails on the map should be no problem, you can currently mark trails as public so that not logged-in users can see the trail. I have thought of steering wanderer towards a more socially interactive platform. I think a good first step would be to allow comments and implement a rating system.

Thanks for the crowdsourced translation website. I was looking for something like this. I will set it up and add it to the contributing section of the documentation.