For those interested, I just posted a link to the unofficial english translation of A Train 9 V5 Final Edition DX at the "A-Train EN Community" - Discord.
It might need still some tweaking here and there but it should be 99+% complete.
Also, I added some articles in English to the Lexicon. Might do more when in mood at some point.
Feedback is welcome.
Further plan is to make some english tutorials for beginners, and maybe introduce advanded tools and techniques at a later time. We will see.