If I were Mozilla I would support Bing, Yahoo, Google, Duckduckgo, Yelp, Ecosia, Qwant, Startpage, Yandex and Wikipedia as search engines out of the box. I would also pursue revenue sharing agreements with each of these search engines to make up for the fact that Google will no longer be the biggest donor to Mozilla in a years time.
Yes, please. I rarely, if ever, use Firefox on my Android phone because it doesn't mirror the Start Page I have set up on my desktop/PC version. I've tried the "Desktop Site" button in Settings, doesn't do anything.
Having said that, my browser opening Start Page on PC has been the MyYahoo consolidator homepage for a very long time, but Yahoo ended that a couple weeks ago, which totally sucks, and now there's quite a bit of feedback on Reddit and elsewhere about the loss of MyYahoo after decades. Hopefully Mozilla would take a look at the now-gone MyYahoo landing page functionality, recognize all the refugees it created out in internet land, and see an opportunity.