Sorry, but it's perfectly possible to produce a 300 mile range battery in the current Roadster envelope using latest chemistry. I'm currently working on a number of battery options for my Roadster.
My point was that the Model S platform wasn't built assuming the same level of battery tech as today. When building from ground up they conservatively went with a certain level of battery tech that has since been exceeded. Therefore we get a frunk where there was battery space before. Pulling that forward to the Lotus chassis, or something similar, you may see the battery tech today but was the tech there when planning began? And their mule was going to go away while the battery tech was still catching up.
I don't understand that comment... the Roadster Chassis is an Aluminium composite with Carbon Fibre body work... where is this relevant to the discussion?
The weight savings afforded by Carbon Fibre body work allows less batteries. Therefore the car you are proposing with the 300 mile range is assuming certain types of technology that aren't well suited to mass market. Going all aluminum makes the resulting cars weigh a bit more, but the equipment is usable on more platforms/cars. Carbon fiber is more of a hand-build tech, isn't it? So the relevance is directly towards the type of chassis they must start with in order to produce the 300-mile roadster for your items #1 and #2.
You need to re-read my original wish list. In that I suggested that Tesla would have a race team which would benefit them both in terms of technology and exposure. You will also see that I proposed everything from an enhanced Roadster, to a super car, to a mainstream car built on an existing mule. Part of my argument was based on the fact that Tesla have never built a car from the ground up and I want them to succeed not bet everything on a single platform. We have yet to see whether they can deliver a Model S at the reliability and quality levels required by a car in this price bracket.
I equate race team with large marketing budget, I could be wrong. Not sure about super cars because Audi seems to be the racing arm of VW and does quite well. Bugatti being the supercar segment of VW as well. That could've worked but I think requires a larger company these days. For instance, what is Exagon getting from their supercar launch? They are a specialty supplier of racing parts and aftermarket custom gear? Concentrating on supercar plus racing seems like a very good marketing strategy for that type of business. Items #3 & 4 are particularly difficult without being tied to a manufacturer interested in funding such things. Very hard on a go-it-alone basis, imho.
Items #5 & 6 (tech xfer and mule) are related to supplying a larger car company as well.
The mainstream car on existing mule an interesting part of your entire wishlist/argument -- it could've gone well, but the skateboard design is better imho. I don't see a mainstream mule that could've done as well as the skateboard, so I believe they made the correct choice.
Tesla's current path looks like a go big path -- certainly not an easy task. The path you described seems like a supplier path; smaller but could've been profitable. Or your path could've been a 'get bought by VW or Toyota' type of thing.