- Real collaborative sharing - Apple seems to have missed the boat on this one entirely. Sharing in Mountain Lion still follows the ancient paradigm of emailing, messaging and flicking files to people you want to share with. How quaint. Did you hear that wooshing sound after the keynote on Monday? It was the collective sigh of relief from the DropBox team.
- Unified Messaging - What's the deal with the chimera that is Messages or iMessage or is it iMessages? I forget, just like Craig Federighi did during the demo. C'mon Apple, just give it a single name. This is the type of thing Microsoft (or worse VMware) does, not you. And while you're at it how about a unified approach to messaging. I mean what's the difference between an email, a tweet, a message and a FaceBook post? A few bytes. This is what you guys excel at (or used to).
- Fix the Sidebar - It was bad enough that "Devices" were buried at the bottom of the SideBar in Lion. Being able to rearrange them in Mountain Lion helps, marginally. Why can't we have some decent icons with color? And who in their right mind wants to view all their files? Get rid of that. And while you're at it get rid of the "Do you want to Eject All or just one?" warning that pops up for external drives with multiple partitions. 99 times out of 100 people want to eject that entire drive. For the rare occasion where someone doesn't an option key press would suffice.
- Videos on Photo-stream - Seriously, I still have to use a cable to get videos off my iPhone? [Edit] Thanks to the aforementioned DropBox team there is now a solution for this. Perhaps a little buggy it seems. Still wish it was built-in to Photo-stream and iPhoto.
- Fullscreen Applications on Launch - You know you want to, Apple. Just do it already.
I guess we will just have to wait another year to find out.