I use aha a lot during meetings. I'm presenting ideas to people, and often changing them on the fly based on their input. That consists of creating new features, convert some to master features, changing status and to so on. I touch most of everything that is available on the features board. The thing is, often aha takes more than 3 seconds to respond per request. And while this doesn't seem much, If I'm changing the status from 10 features, that alone will take 3 seconds to go into the feature, 3 seconds to change the status, 3 seconds to go back to the master features. That's over a minute and a half, just for the first master feature.
So.. it would be great if aha could be made faster. From leveraging local or remote cache to getting geo-distributed servers so that they are closer to the clients, making aha "realtime" would greatly improve the quality of life for its daily users.