Hi Pine,

A few more responses:

>> Support interwiki linking such as to Meta

Interwiki links already work in the app. If the link goes to another wikipedia.org site then it stays within the app, if not then it gets opend in the browser. This is because the app registers for Android intents to http[s]://*.wikipedia.org.
See also https://test.wikipedia.org/wiki/TestLink for an example. The first interwiki link goes to Japanese Wikipedia, so it opens within the app. The second interwiki link to meta opens in the browser.

>> Condense the options panels from the left and right hamburger icons to a single icon

The Action Bar icon on the right is actually not (supposed to be) a hamburger icon. It's the Table of Contents icon. Clicking on it toggles the ToC drawer, same as when you swipe from the right edge of the screen.

>> The Signpost front page turns into long strings of vertical text when I look at it on mobile. Try viewing https://en.m.wikipedia.org/wiki/Wikipedia:Signpost on a display with a width of 400 pixels.

I see the behavior you describe on MobileFrontend (when viewed in a browser) but not the Android app. Still, the CSS styles in the app could use some improvements as well. I guess when you wrote mobile you meant the web site, not the app.

Thanks for the feedback!
Bernd