I am a late commer to this thread and if I am speaking out of turn, I apoligize. Also, I am not trying to make excuses for Lotus.
However, more power in any car comes with many compromises generally not immediately obvious. More power means, stronger trans, diff, drive shafts, more cooling, bigger brakes, sometimes even strong subframe, etc. stronger generally means bigger, all of those components occupying more space.
I am a noob to Lotus, so I do not know their philosophy beyond their focus on lightness and handling. If these were the main goals, the best decision they made, IMHO, is to have double-wishbone front and rear suspension. This takes up a lot of space compared to other configurations. Emira being bigger than Evora, I would assume the control arms are much longer than in the Evora. So, if they had to compromise between 450 hp and multi-link suspension in the rear and McPherson in the front vs. 400 hp and double-wishbone config on all four corners, I am very glad they made the later choice.
comparatively, the BMW G80 makes 473 hp, with a street oriented suspension, cooling and brakes, weighs over 3700 lbs, uses 18”/19” wheels and only accelerates to 60 mph in 4.1 sec per factory. Not to mention that achieve that with twin turbos and a flat torque curve from 2800 rpm. Naturally it is $30K cheaper, poor engineering IMO.
similarly the Cayman GT4 and even the RS use McPherson strut and multi-link rear. The GT accelerates to 60 mph in 4 secs With 414 hp while being about the same weight, and that acceleration comes when equiped with PCCB brakes.
if Lotus cared about about 0-60 or believed their target customers cared about that, they would have released a base Emira with 19” tires and wheels with floating caliper brakes.
I am, for one, so glad they live up to their reputation and not short changed us, the enthusiasts.