I'm not that sure if I've got the right place to make suggestions, but I have an idea for SwiftKey.
I've recently seen on a Huawei mobile someone using the default keyboard like this:
It was swiping from the Swipe button (Bottom-left. It's second function was to go to settings) to the letter A and all the text was getting selected, just like a Ctrl+A on the PC.
Swipe button + X was cutting the text. Swiping from the Swipe Button to D was opening Google searching the selected text. + C was copying, +V pasting the text.
And these are only a few of the cool features it has. It would be nice if we would have them, as the Huawei keyboard still has problems on other things like the dictionary for some language & things.
And by the way, thank you for SwiftKey, the fastest keyboard on the market. :D