Don't blame Atomic, it's not their fault. We have a long list of improvements we would like to make in firmware, but other development, such as the Cobalt 2, or improving the compass, or the firmware updating process, etc. has taken priority. Some tasks are more complex as far as the code is concerned, or are things we want / need to do as part of a batch of features or a larger rework.
The change the OP was beta testing- zooming the timer display at stops to make it more legible- is something that was clearly a functional improvement for a large number of users, something that there were a lot of request for, and that turned out to be fairly easy in the context of our development. Because it is such a clear benefit, we are working to implement it in a firmware update for older Cobalt 1's as well. We hope this can be made available this month. Silencing all alarms is a feature that has been requested, just not as much. We do plan to make it available as part of a larger update when we get through some of the things we are currently working on. The "Expert Mode" tag is my idea for a batch of features that tend to be desired by more technically oriented or experienced divers and that would make sense to implement together. Keeping them in a mode might avoid complicating the interface for the typical recreational diver.
Ron