Re: Mozilla doesn't need a new logo
From my perspective, it's because Mozilla have lost their way. They've stopped listening to the users and keep making nonsensical development decisions without any real thought or consideration.
Australis was and still is a disaster. It was slated from the word go, the "Classic Theme Restorer" addon is one of the most popular on the Mozilla addon site, and the declining market share of Firefox accelerated after it was introduced. Mozilla's response wasn't to acknowledge concerns, or look at tweaking the most heavily criticised aspects, but just to ignore the complains and pretend they didn't exist. Mozilla were right, and anyone who complained was wrong.
The introduction of Pocket and Hello added pointless bloat to what was originally designed to be a simple, lean and fast browser, and hardly anyone used them as a result. Hello is now in the process of being removed, and Pocket has already been spun out into an addon (albeit one that is bundled still)
Numerous other customisations (once Firefox's USP) being steadily stripped out and binned. XUL and XPCOM are due to go (with addons becoming lightweight Chrome-like addons instead), heavyweight themes were binned, numerous other customisation options were removed. This didn't do much to improve Firefox's reputation for new users, but it did alienate plenty of Firefox's existing users and 3rd party developers.
Hence overall, Mozilla have added nothing to Firefox to make it stand out, and have instead spent all their time removing features, alienating their users, and trying to play catch-up to Chrome both in terms of looks and functionality such as multi-threading.
Hence, will it still be here in 5 years time? Not the way Mozilla are going about things it won't! It'll take a lot more than a wacky change of icon to reverse Mozilla's fortunes.