Thanks to everyone who has chimed in here and especially to @Mitch_S and @W_Brunette for sharing their invaluable experience!
Sadly for us but exciting for him, @redlar has been busy with travel. We miss you @redlar and hope you can share your experience with the ODK community again at some point!
I'd like to introduce everyone to @ggalmazor who has joined the Nafundi team and has fearlessly started making Aggregate improvements. His priorities are to make Aggregate easier to build and deploy and to investigate recurring issues. As he takes the lead on those aspects, he’ll be soliciting feedback and opinions here and on GitHub issues. Welcome, @ggalmazor!
The first big task @ggalmazor has taken on is to migrate the project to use gradle as the build tool and recommend IntelliJ as the development environment. These changes make Aggregate easier to build locally and provides some standardization across ODK projects. That work is available for review at https://github.com/opendatakit/aggregate/pull/112