The scaling units were set somewhat early in development to a base of

0.8em, which was a bit on the small size. The m (medium) size was

almost always too small, requiring use of the in-between ml

(medium-large) size. Similarly, l (large) was never large enough,

requiring xl or xl sizes. And those were still on the small size,

given their upper range on the scale.
The scale has now been redone to use 1em as the base, and to change

the l, xl, and xxl scales to better represent their names. This

gives us a slightly larger UI by default when using these units, which

works better on both touchscreens and modern desktop displays.
Mostly, this doesn't impact things too much until you get to the ml

size and higher. Any UI components making use of these will need updates

to choose more correct sizes.
Ink itself isn't really impacted much by these changes. Alerts required

small changes to the layout to reduce the distance to actions.

Tested this with all the Ink components, and with Review Board (which

does require updates).