There are some feature requests that appeared while using your keyboard for some days:
(1) Physical Keys/Volume:
My Custom ROM provides the possibility to use the Volume-Buttons for navigating the cursor as well. But Multiling O Keyboard seems to overwrite the ROM setting. No problem - but I was used that volume-up sets the cursor one character forward and volume up on character backwards. Multiling O Keyboard does the other direction. Would it be possible to provide an additional setting for that? (1. Move Cursor with Volume [on/off], 2. Volume-up direction [forward/reward])
(2) In Germany we sometimes have very long words compound by two or more "normal" words. So "shipping" consists of the two words "ship" and "driving": "Schiff" + "fahrt" => "Schifffahrt". Or "air tank" is "Sauerstoffflasche".
Having "auto space" activated is generally a good thing but for this word it would be nice to have a possibility to de-activate "auto space" for the next word. Or remove the space before the last swiped word.
So I could swipe "Sauerstoff" then do any gesture and swipe "flasche" to have "Sauerstoffflasche" instead of "Sauerstoff Flasche". Or swipe this two words, then do any gesture and the two words will be moved together.
(3) One aspect in settings seems a little confusing for me. Some entries in menu are real settings (e.g. Layouts > 2ABC) and other entries will open a website when touching it (e.g. Layouts > DIY). Could you mark those who will open the website (e.g. Layouts > "Help: DIY" or a Browser-Icon).
I'm touching those website-liks very often because I think there's something to adjust.
② There is a well known keyboard that has this feature, it works this way: you swipe the fist part of your word, you make a gesture from space to backspace (this doesn't do nothing visible yet) and finally you swipe your second part of the composed word, the result is the two parts joined without the middle space.
I believe that we could define a key [JoinNextWord] so we can place it wherever we want in our DIY layout that can have the desired action.