It really depends on the platform and manufacturer lock downs. Over volting the motors could be an avenue for increased performance at the cost of range.
Motor and battery swaps are entirely possible however are fairly expensive while requiring a pretty good understanding of electrical engineering.
Right now the big thing is to swap electric powertrains into vintage chassis.
This is a WAYYYYYY better insensitive for everyone than offering free charging at charge points. It should move people who could charge at home but do not in order to save money back to their home charger freeing up DC fast chargers for those who actually need it.
There’s also astound (formally wave) offering gigabit+ in Seattle.
Yes, even if your aren’t skip lagging it’s really easy to travel without checking a bag. 40L backpacks fit five days of clothes and toiletries while still meeting most airline carry on requirements.
Motors will be more popular to swap as most vehicles use the batteries as part of the sub frame and there’s less of a risk of fire if the BMS or charging circuit does not agree.
Electric motors are also easy to obtain as they are used in applications outside of vehicles meaning the only difficult part are mounting, cooling, and geting the motor talking to the car’s controller (there are aftermarket controllers for tesla motors already available)