As always I'd love to support FFG if they brought the newest rules over in english. I would only recommend they don't use the translators that did Promethium, as that was kind of a trainwreck that needed around 10 pages of corrections/errata on the official forums.
Glad you found them! I would be happy to have people use these rules in their game, but if/when core exxet is translated I would recommend people use the official texts and support FFG (and I will probably remove those files from that drive when that happens).
Also If it would be better for FFG from a cost perspective I would be completely for a watermarked PDF limited release. I already have all of the other books this way since it's really nice and convenient for me, and it would possibly allow them to gauge interest in an actual print run, which can be expensive.