Got a decent 'package' price on floor mats, cargo cover, cargo liner, splash guards and rear bumper applique - 50+% off retail and no installation charges. I'm sure it didn't cost the dealer anything but it did save me something. In total I improved on their original offer by about $3K.
I don't think you'll get them to throw in remote start since it's $400 for parts alone plus a couple hours of install time.
Just curious, what kind of quote did they give you? When I tried early on it was basically we won't commit to anything until you come in and it will depend on whether we have it or not. I ended up going with a different dealer just because there attitude was better.
I understand what you're saying about buying this time of year. My last car I bought in mid-Nov. Beside the weather being so bad you can't do anything with it within a couple of days it looks like crap inside and out and looses the 'new car' feel right away. Much prefer buying after March.