You just said all features i would like in an indash screen..
I could just add some mecanical-electronical features of the unit :
- a light captor which could accomodate the brightness of the screen function of the ambiant light (like pioneer AVHP-5700DVD do). Niot difficult. The light captor will be coupled with a PWM inverter for the backlight of te screen.
- A full control of the screen movements like its position when out of the dash (Tilt function) which avoid your screen hurting the dash on openning when your unit is too deep in the dash (technicaly not difficult to do)
For having tried to make my own (I'll post pictures of my V2.0 soin) , I could say that the most difficult thing is integration. There is not a lot of space after the half of the DIN used for the screen. Just left a half!!!
And after putting a slot load DVD, it left....nothing!
After that you need to develop with very intagrated electronics composants.
A very hard job....
I think it would be easier to try build one for 2DIN sized one. but it is another topic...
a DAy I had purpose that :
In-dash VGA + DVD?