The number-crunching pillar - keeping the calculated stats correct and the data resilient to game patches.
Cases where the builder currently shows the wrong skill or a missing icon - fix these first.
The phone/tablet experience - an ongoing pass started across v0.2-v0.3.
Specs whose mechanic entry button shows, but the inner skill set it opens does not.
The content side - curated builds, collections and ready-to-run squad comps.
Presentation tweaks - no wrong data, just nicer to read.
Getting builds in and out - chat codes, share links and social previews.