I just bought pro and am nitpicking...
At the bottom of a conversation the swipe up brings up the keyboard at a very far distance from the message bar...
Often i swipe up just to make sure im at the bottom..and the keyboard popup is annoying.
My perfect world...the keyboard wouldnt popup unless you touch the new message bar or swipe up way closer to it...
Or configurable setting...Allow selection of how to bring up keyboard. For me id rather tap the bar than swipe.

As well...maybe a way to swipe the keboard down. On my phone the back/cancel is far away from my swiping thumb.