3. Now you introduced additional stake distribution of 1 billion NEMs via NXT AE. Lets assume an average price will be 0.01 NXT for 1 NEMs (not highest price on AE now) so you will get additional 10 million NXT (700 BTC)
Its not an additional distribution. Original stakeholder just get a token on the AE (if they want to) which represents their NEM stake. So they can already trade their NEM, although they have no real NEM yet. DEV-team earns nothing with this.