Before, I thought that surely Tesla would make the most of the 2170 cells, and squueze in 100kWh into Model 3. The 7.7% longer cells (not taking any floor space), and the increased density should make that very doable on a slightly smaller car. But we're now looking at a 70-75kWh "big" pack.
With a smaller, lighter car, 100kWh, I was hoping we'd see really impressive track performance, better 0-60 and better lap times, less overheating issues. But it seems now that the 2170 cells are about all cheap, and Tesla didn't do much to the chemistry to speed up (dis)charge rate. If the current 18650's are discharged up to ~5C, it seems 2170 will do roughly (total uneducated guess, sue me) some 4C. Peak output power could be as low as 280kW then, great but not "ludicrous". And have we not heard of a 300kW invertor being used? If they deem 70kWh enough for range, and the inverter can only handle so much, why add cells? You can for "ludicrous mode", did Elon promise, but with Model S going low-2 second to 60mph, will Model 3 even dip under 3? I am starting to doubt it. Plenty for anyone of course, had Tesla not pre-existed.
So I'm a bit bummed for now. Perhaps Tesla is doing the smart thing rather than the awesome thing this time. Probably sensible. The 0-60 stuff is nonsense to me in terms of owning or driving on the streets, but wonderful from an engineering standpoint. A (by volume) so much smaller battery would be a let down. 100kW in that smaller car, range over 400 miles, how awesome would that be? And, if the chemisty doesn't doanything (yet) to make the most of upcoming higher speed CCS chargers, or Superchargers...it's just not going to be the greatest road trip car it could have been. Yes, Model S is for that, biut poor people travel also. 300 mi is enough to do longg stints between charges, but the charges are I fear going to be slower (mph) than Model S, even the 2012 one. Despite (because) the new cells and lower consumption of the smaller car.
What I think many people want from Tesla is a super-hot hatch. A P100D, downsized, in size, price but not performance. Hundreds of kgs lighter than Model S, same peak power, lower consumption, bettter performance all around. It would be at least $30K cheaper to produce, and if Tesla cared enough, they'd make 100kWh fit. Do Evo type buyers care for boot space? Stick a wing on it, offer cooler (less aero) wheels, stock sporty stripes, and it will sell like crazy. Leverage that GT Electric vibe about to go viral.