If you want to sell in large numbers, just make a good small hatchback/crossover at a low price.
The Bolt and Bolt EUV show the way. Gives up a bit of cargo space behind the rear seats to give a roomy cabin with a flat floor. Plenty quick enough (EUV 0-60 in 6.8s). Maintenance schedule is mostly "rotate tires".
When the tax credits hit, it flew off the lots, despite no AWD option, slow DCFC and no heat pump.
GM will make a Boltium as soon as LGES can make LFP cells. Hoping my Volt holds up until then so I might have a reasonable small EV option.
(Tesla doesn't do dumb cruise fallback, GM does and I have several choices of nearby service center.)