"Have you considered some sort of folding feature to get the engines inside of the body?
If the body has to be made bigger, how does it affect drag in comparison to having the engines as you now have?"
"You dont have a BEC.
You dont have a charger for the battery.
You dont have a GPS.
You ... like to have more then 1 battery.
You need a data link on 433MHz to get telemetry.
You need a laptop (and sunshade) to do map / telemetry / config in the…"