Hi,

The people who answer questions here, for the most part, are other users volunteering their time (like me), not Mozilla employees or developers. If you want to leave feedback for developers, you can use this link. Your feedback gets collected by a team of people who read it and gather data about the most common issues.

You can also file a bug report or feature request. See File a bug report or feature request for Mozilla products for details.

It's easier on Windows than on Android. On Windows, you can launch tabs from the Synced Tabs sidebar. The classic sidebar (on the Settings page, "Show sidebar" box un-checked) even has "Open All in Tabs" to crowd your Windows Firefox's tabs bar with your all mobile tabs.

On Android, it looks like you need to tap several times to launch tabs from other devices, one by one. As far as I can tell, there's no "Open All in Tabs" for Synced Tabs on Android. You can use the Connect site Paul linked to for proposing how you would like it to work, or voting up an idea already submitted by someone else (if you find one you like).