Listen to me, the Model 3 will NEVER fit a 200kWh pack.
It might NEVER fit even a 100kWh one.
If you want to delude yourself, be my guest, but if you want to have thoughts that are possible, realize that unless Tesla manages to hugely improve Lithium Ion cell density, even a 100kWh pack for a M3 might never happen.
320 mile range is sufficient. The Model 3 will not be allowed to have range that much better than a MS/MX.
Until Tesla manages to put something like a 150kWh pack on a MS/MX, there will be no 100kWh M3.
The 200kWh pack alone is likely to be sold for around $60k (when it needs replacement), including Tesla profit.
You are dreaming...