@orebmur I see.
On one hand, there are some other PDF readers at GooglePlay, I keep several on my Likebook Plus and use the best rendering one each time. On the other hand I like the stock one too, and it's a pity to hear about non-linking Stardict, I have the same need. However, I'd expect the Boyue guys to fix it(in the worst case) or you to find the oversight
With drawing/sketching, which is probably not my main goal anyway, I guess I can live, though would like to get a nice one. However, due to the lack of card slot and backlight, both Boox and reMarkable are out of my consideration.
The third and probably most sad thing to hear is about the same performance issues as with i86. Loved the device(somebody stole it from me in gym), but hated this pauses on library browsing etc.