I mis stated - what I meant to say was there is not a "fixed" cg -from the factory that must be adhered to - The CG can be shifted to the pilots liking -and that of course - IS very important.
Isee many opinions based on information gleaned from doing work on commercial aircraft -which is a field that demands getting best payback out of a cargo/passenger carrying airframe.
On wild aerobats -the criteria is totally different - be thay full scale -that is -man carrying -or just a big ol toy -