My thoughts are similar to yours; I'm not sure Ford can pull this off without glitches.
I have a reservation and will hold on until I'm forced to make a decision. Hopefully Z plan pricing will be known at that point.
The other thoughts are more about how we use our two vehicles. Our around-town car only gets 5k annually and we've had a couple of PHEV's that work very well (Volt/Fusion Energi) although a little more range would be nice. Our trip car gets around 15k annually and is presently a Lincoln MKZ Hybrid which works well. I don't know how a BEV fits in this picture. For limited local use it would be expensive and subjected to parking lot dings. For trips, the charging infrastructure it tied mainly to expressways and could inhibit our trips somewhat (time/flexibility). We're all set up with a Level 2 charger in the garage with separately-metered off-peak charging so a PHEV or BEV at home is no issue..
I am still able to lease management cars from Ford which is the easy way to go but of course the Mach E won't be available, at least initially. I really want to see the details on the Corsair PHEV next spring. With AWD and a decent electric range, that could actually fit the bill nicely.
You're also correct that there are going to be a lot more choices in a few years. As the supply infrastructure is built up, the value proposition will improve. Batteries will improve in range and charging speed and, combined with more charging infrastructure, longer trips won't be a concern.