I'm new to electrics, but things I would look for in a product:
Motor mount hardware incorporated in the design and/or included with motor
Prop adapters as part of the design and or included with motor
Integral esc's, or option to purchase with correct size esc
Good explanation of terminology in advertising, i.e. educate your customer so they know what they are buying
Reccomended props sizes and batteries
"Plug and Play" power systems for various size aircraft. Analogus to dropping a .40 size glow engine in a 4-5lb. aicraft and a .60 size engine in a 5-6 lb. aircraft
And of course, it needs to look good
