Your keyboard does take up much more space. As well as reducing what else you can see in the app you are working i find it difficult to span the height with my thumbs. Could you create a setting allowing people to select height they found best?
as much as I love Wrio, it covers just too much of the screen! I talked to other people and figured out, I'm not alone with that. So I thought Hexagons with a little shorter vertical line might help to solve this. Might be an easy addable option! I scribbled on the Wrio-Keyboard to have a comparison (see at the attached file).