a sizable portion of the plugins are ecosystem dependent so just seeing whats in use in your company is a good start. For example installing an Argo plugin if you don't use Argo doesn't increase value for a user
The next step I'd suggest is talking to users to see what would be useful. 1:1 is fine, but I've found doing a quick jam session over lunch to be faster, driving questions here can be about friction with existing views/data isolation, workflow hiccups, interruptions and collaboration gaps that can help the teams operate faster and with less interrupts