It would be great to signify a browser window as my main window where new tabs are opened rather than using the last focused. Alternatively, I would take a way of blacklisting a window from letting new tabs be opened. As more and more apps become web-apps, I like having the apps open in multiple windows on one monitor and use another monitor for web _browsing_. Having new tabs open, hiding my email, jira, docs, etc... is a small annoyance but one that would be great to have remedied.