Agreed.
I'm going to just take the experimental approach, not like one cannot remove the door panels again and try something different/add later.
Just saw on this channel:
https://www.youtube.com/user/CarAudioFabrication/videos
this video:
https://www.youtube.com/watch?v=h3EXuHlBy4M
Looks like he uses different layers of different types, and custom plastic panels to cover the window service area opening, while still allowing them to be unscrewed/removed if the window ever needs replaced. Top notch work! (great excuse to buy all kinds of tools).
Off topic, but I read somewhere people complaining about the bose system, here is an Audio Control amp that is in my opinion future proof for any vehicle moving forward if you want to keep the stock deck. NO remote turn on wire needed and you get an extra set of line outs for future sub amp add ons:
https://www.youtube.com/watch?v=flz6sq1dCuk&t=4s They also have a dsp that's just sweet!
The idea is it eliminates the need for a line/level converter, as everything is built into the amp. An INSANE amount of flexibility. Probably going to be the way everyone will have to go in the future with this hobby as oems come up with new ways to over complicate things and give us bs we don't need/want.
I found this helpful as well:
https://www.youtube.com/watch?v=308ueFVOylU