For point 3, there are options like Adafruit's PiGrrl series, some of which I believe need 3d printing (but you can order that done for you from elsewhere). The downside of the PiGrrl is the lack of keyboard. The upside are the controls are better.
On point 4, yes there are, but this is rather convoluted too. Web browsers are supposed to be used to browse web pages. If they wanted to use javascript to create a cross-platform app, they should've used something like electron.
Point 5 I'll get round to when I have time, but I'm very time poor. I've already started seeing if I can improve mednafen support for Atari Lynx and get the GLES in 4.4 working better with mednafen.
I'm totally with you on the idea of raspbian being the only answer - I really don't like that. Unfortunately many of the problems come from the fact that the Allwinner chip used is so poorly supported and that people don't write code for multiple architectures, so packages build but then you get segfaults over stupid things like endianness when you run binaries.
On point 4, yes there are, but this is rather convoluted too. Web browsers are supposed to be used to browse web pages. If they wanted to use javascript to create a cross-platform app, they should've used something like electron.
Point 5 I'll get round to when I have time, but I'm very time poor. I've already started seeing if I can improve mednafen support for Atari Lynx and get the GLES in 4.4 working better with mednafen.
I'm totally with you on the idea of raspbian being the only answer - I really don't like that. Unfortunately many of the problems come from the fact that the Allwinner chip used is so poorly supported and that people don't write code for multiple architectures, so packages build but then you get segfaults over stupid things like endianness when you run binaries.