but for some reason in the auto import settings there is no 'same as previous' option for the import 'develop' settings. It has to be done manually.
Quite right: Option, Command, V to apply the previous setting. Something I do regularly.
I use a macro program called Quickeys that allows me to trigger from Lightroom (kind of). I've designated Return as the "shoot" key. The macro program very quickly switches from Lightroom to your regular import program (in the background) so the Lightroom window is all you see all the time, no flicker. Then, in a fraction of a second, back to Lightroom being active. Difficult to explain in words, but the actual effect is that it looks like you are actually shooting from Lightroom. You would never know that you are in fact shooting from the camera software running in the background.
I also use Quickeys to trigger the LiveView whilst in Lightroom, etc.
Additionally, I've designated two "delay release keys" set to 5 and 10 seconds, to allow me time to position momentary things (such as light shaders, or hand-held reflectors) in the shoot area, after I press the trigger, as I can't be relying on an assistant all the time and sometimes it's easy and quicker to do things yourself, without having to explain.
I use all of the above with the Leaf software and Lightroom working in unison, and I'm pretty sure it would work just as well with other software.