gain space for 2 more keys
back-delete smaller (keeping only upper horizontal part)
making hide-keyboard key a bit smaller plus utilizing free space (space btw keys should be the same everywhere)
Although the extra space on the bottom row looks a bit odd, we feel it’s important to have it to prevent errors with those keys. It can be quite a pain if you accidentally switch keyboards when trying to hit ‘Opt’ or space, for example.
As far as the backspace key, it is frequently used and it can be nice to have a bigger target to aim for.
That said, we continue to consider changes like this depending on how many people are in favor of them.