Mike (Mikey) at Blue Monkey is going to interview Yamaha, post something on their YT channel.
Court reviewed the Voltbike Enduro with the Bafang Max. That bike has a torque sensor and is a nice basic mid-drive. They are at $1800. Voltbike is an impressive company, coming out of nowhere. Bafang has a legal limit torque sensor mid-drive in the works, the
Max Ultra. The Max are frame integrated, not bolt on. Bafang has a low cost model, the Modest, and they have some sort of battery factory in the works.
In other words, here's a company that owns the DIY mid-drive market, with a decent reputation. They are aiming for the low end, but production type bikes. I could see Yamaha going into that Civic market, but it may not be that easy. Bosch has talked about a cheaper drive system.
I have two Bikes Direct bikes and a Trek 820, all converted to ebikes with hub motors. Since I have 2-3 years on all the bikes, I'm not that concerned about the quality of the frames. The cheapest bike was $270, the most expensive $420. Each bike has at least 2,000 miles, trouble free miles. You can get a BBS02 mid-drive from Luna for $400, or a MAC or Golden hub, beefy hubs, for about that. You can go with a Bafang hub for a lot less.
With a direct model you could sell a decent frame, a very good motor, and some sort of 48v battery, real cells, around $1200. I expect bikes like the Voltbike to put an end to mainstream DIY. It just isn't really worth it. Does Yamaha really bring anything to the party, jammed between Bosch and Bafang? Shimano is a huge company, the biggest of the 'names', but they've done little with ebike motors.
I think Yamaha should make a light motorcycle, something with speeds and range for in city use, but registered and licensed.
It's an endlessly fascinating world and right now there is a lot going on, but most of it is not seen.