OK, not going to be getting one myself as I have an '03, but...here's some things I'd love to see changed, improved, etc. between the first generation HCH and the next generation HCH...a Top-10 list, if you will...in no particular order...
1.) OEM tires with more than 20k-30k treadlife.
2.) Improve airflow and drainage from the outside top corners of the windshield around the 'A' pillars and the side windows. The outside of the pillar is CONSTANTLY gunked with road grime, makes it look like the car's "mascera is running". I've used Rain-X wipes on the pillar and that helps a bit, but it's still quite annoying.
3.) Built-in lifetime MPG guage, instead of relying on Trip B (which you then have to make sure people don't touch)
4.) More accurate MPG sensor, and one doesn't seem to only update in 0.3/0.4mpg intervals. (Ever notice you can have 45.1 mpg and 45.4 mpg, but never anything in between? That drives me bonkers.)
5.) Add logic to the auto-stop to make it activate in the following additional condition (tied into the ECON button)
a) Brake is depressed for more than 7-10 seconds. This would be PERFECT
for stop-and-go freeway traffic. Currently this only works if your speed reaches 10mph before you brake. Many times in freeway logjams or even at restaurant drive-thru lanes I turn my car off (left in neutral so I can start up quickly and move) to save gas.
WOULD LOVE TO SEE THIS RETRO'D to current generation HCH's.
6.) Brighter headlights...OR...at least make XID's more readily available. Those lights are just nasty. Also replaced the bulbs with some whiter light ones, but they burned out after just 9 months.
7.) LED tail lights, turn signals, back-plate lights, and interior lights. Looking into places like
www.superbrightleds.com and
www.lumileds.com for incandescent bulb replacements but it's slow going and they're less efficient.
8.) A stereo system that can show more information when playing a CD than just what track it is on, and that only if you push the mode button 6 times. Also, having more juice would be nice...even with the volume maxxed some CD's are kinda anemic. Better speakers wouldn't hurt either.
9.) Shorter, stiffer antenna. About 18-24" would be great. Keep the 90° swivel though.
10.) More external colors. The Prius is kicking butt with the number of colors, shouldn't be that big of a deal to add another 3 or 4 bolder colors to the lineup.