I use photoshop almost every day and have been delighted with it forever in spite of it's huge/hard to find list of features. I was awaiting with the same delight for what was touted as a full version of Photoshop on the iPad. I was disappointed since most of my initial attempts at using it failed completely. Here is what I was trying to do:
Finding if a feature exist or not in the iOS version
These are rather simple use cases which I use so frequently in my photography workflow that missing them in Photoshop on the iPad makes it currently more a learning tool rather than a tool for production work. I would like to encourage Adobe to fix those basic requirements before spending time adding other complex functionality. I could come up with a longer list of simple missing functionality in Photoshop on iOS but I was wondering if people can comment here with their experience. Doing so would be useful to get traction with Adobe to do something about it. Let's face it, Photoshop is great but not free so we are justified in having simple (if not high) expectations of the product. I do not believe a desktop is required to offer all those missing basic features and having them would make quick workflows possible on the iPad while on the go. I am also at a loss why the de facto photo editing app on the planet does not have the ability to offer itself as an options to edit a photograph while browsing in the iOS Photo app? (use case #2) When you have only 10 picture it does not matter whether you need to rebrowse all your pics in the Import and open dialog but when you have 22,000 like I do it is totally impractical. This is why the photo extension support was added in iOS and Adobe should make their flagship app work on that platform using the customary APIs made available to the apps.
I think we were all a little misled, when Adobe announced they would be bringing the real Photoshop to iOS. Most of us interpreted it as "the full version of Photoshop" when what they really meant was "the real Photoshop with full PSD compatibility." The toolset is still quite basic, but getting better slowly.