It might be a fairly simple add on similar to the existing AEB bracketing facility. Essentially requires focus adjustment between shots ie: near, middle and far. See https://digital-photography-school.com/a-beginners-guide-to-focus-stacking/ for more details on the subject.

Hi, fansa0627c44. Thank you for taking the time to write your valuable suggestions. We will have it forwarded to our DJI Developers for attention. After the evaluation of the engineers, significant suggestions or requests will be implemented via the firmware update, app update, etc. 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.