There are a lot of other drones that should have the cruise control feature, like Mini 3 Pro, Air 2 etc, Mini 2, Mini SE etc. It would be a really useful feature.

+1.  At least add it to the Mini 3 Pro.  

Hi there. Thank you for reaching out and communicating this request for the other DJI drones. This is well-noted, and we will have it forwarded to our related team for attention. For any updates, please stay tuned to the latest news on our DJI official website at (www.dji.com). Thank you for your continued support.

+1.  At least add it to the Air 2S

It probably won't happen, but YES : Mini 2 please!!

+1 great suggestion,  and also low speed mode too.