1. Currently there’s no much difference between then. The only difference is that get_traders_positions gives you the is_long attribute.

2. I had to disable that feature due to user abuse by putting up to 100 UUIDs in a request every second

If you want that feature because of the rate limit of the v2/getTraderPositions endpoint (1k calls), you can use the v1/getOtherPosition endpoint which gives you 10k calls. Both provide the same content with slight differences