1. When writing with autocorrect on (at least in spanish), I can't cancel autocorrect suggestions touching on the "x" on the few ocassions that I have to write a word not in the dictionary. When I do and tap the "x", Daedalus just ignores me and corrects the word. I have tried lots of times without any success, while I have no problem to tap the "x" in other apps (Mail, Safari, etc.).

Hm, we'll have a look.

1. Sometimes the magnifying glass refuses to appear, and tapping and holding on the text just moves the cursor right or left, as when you tap on the margins (very nice feature, by the way!).

You need to tap and hold the insertion point/cursor for the loupe to appear. This is somewhat different from standard iOS behavior, we know, and we might change it in a future version.

a. Before buying Daedalus, I used Pages for creative writing. The change has been for better, but I definitely miss Pages' "triple tapping" for selecting the whole paragraph, specially to move (cut and paste) entire paragraphs, which now I have to manually select by dragging the selection. Could this be implemented?

Ah, well, just use two fingers to select a paragraph. You can also tap'n'hold two fingers to create a selection. Just try, it's standard iOS, though. :)

b. Some other exporting options would be nice, at least exporting as pdf using the font and formatting displayed on the screen as you write.

Yeah, this will be added in an update. We had to ship 1.0 at sometime, so this was left out.

Thanks for your comments. Glad you're enjoying Daedalus.