I think you need to compare the Enyaq 80 with the ID4 First Ed. The things on the ID4 which need to be added on to the Enyaq include: 20 inch wheels (hardly a necessity!), keyless entry, heated windscreen, 125 kW charger, some metallic paint, assisted drive (plus?), USBs in the back. But by going with the ID4, I will get a smaller infotainment display (10 inches vs. 13 inches).
The Skoda man has been on the blower today telling me that his order book is open for Enyaqs. I was tempted to call back to see what the lead time is - rumour has it September (probably somewhere above on this thread).
As to whether my 24 March date holds true for the ID4 remains to be seen, but I'll happily come back and give impressions of the thing as I am sure the Enyaq will be no different to drive.