Thank you for this detailed explanation. That is quite the mounting bracket. I would definitely not want that drilled and mounted on my car.I think your question was fine, and no one will really know until a US version is released. Since it's a world car, I'm sure Lotus has already had to add consideration for US-based plate mounting. It'll probably be some ugly plastic plinth like in past models; not all dealers install these when they receive the cars, and I think future owners appreciate that, as no one wants holes drilled in their nice looking bumpers. Here's what the S1 Evora US plinth looked like:
View attachment 1292240 View attachment 1292241
The vents should all be very functional, and previously, blocking the air path with a giant US-sized front plate was not something that Lotus recommended, as it could lead to overheating (the case was an Evora owner had zip-tied it to the front grill). Mounting the plate on the OE plinth would move it lower, allowing air to pass over it and around it. I don't necessarily agree that a plate should affect intake air, but I'm also not an aerodynamics engineer, so maybe they know best.
The aftermarket vendors will likely create their own solutions so that there are either fewer holes drilled (or none at all), or a way to mount a front plate to an existing structure or hole (tow hook is a popular choice, even if it's not centered).