I own an Apple Watch since last Thursday and overall I like it, but I have seen some things that could be better/improved in the future: 3rd Party apps: They are slow, even after the 1.0.1 update. Currently, it doesn't really make any sense to install apps on the Watch. Calendar: If you are not using iCloud for calendar, then there is no option to Route to the address of the appointment currently open. It's not the end of the world, but why Apple? I am not going to leave my Exchange account.. Mail: Currently you can select only one folder to show notifications. Why not select multiple folders? Also, the unread and marked virtual mailboxes apply only to items saved in the Inbox. I am using multiple folders and have rules to automatically move mails to their respective folders..Currently I cannot say that this feature helps me at all. I don't even have high hopes that Apple will change that. It has been exactly like that in iOS too, for at least three years (the unread and marked mailboxes) Sometimes when for example tapping to save an activity, I notice a small lag. In general the whole UI could be snappier. Glances update slow and sometimes they just don't provide an at a glance information.. Watch faces are not offering a lot of options and could be much better. I expect Apple to deliver many updates in the near future. Sometimes I get notifications for a mail or iMessage, even after responding to it on one of my Macs..This should never happen. I would like to have the ability to customize the communications button and remap it to another function. Hey Siri works around 30% of the time for me. Siri works much better by just pressing the digital crown.. Apart from these things I like the Apple Watch. I am not sure yet if I will keep it though.