Your argument is lacking logical progression.

You claim to want something “better” than a common Chinese frame but you have not defined what is wrong with the Chinese frame and what characteristics you want to improve upon.

If you want to build a path forward you need to know where you are.

Define the geometry of the bike you are currently riding, or have experience with, and then explain what you like and don’t like about it. From there, a logical step can be taken to alter the geometry to more closely align with your desires.

Waxing poetic about some frame you had 20 or 30 years ago is not productive unless the geometry is known.

Regarding me, I don’t build frames for profit, only for myself and friends. I’m not here to "promote" my frames as you claim – just share my hard earned knowledge.

As far as brakes are concern, dual pivot is the standard for a good reason; they are a superior design. All the major manufacturers have made the switch which speaks for itself. Nuff said.