Hi WPMU Dev,
I am really pressed for upgrading to PHP7 to improve the speed of the site.
I just ran the PHP Compatibility Plugin and found A LOT of WPMU Plugins that are not PHP7 compatible.
Here's the list (of the ones I've installed on several installs). Could priority be given to making all plugins fully PHP7 compliant. This is IMO more important than blog posts at the moment as I've come the WPMU community to be ahead of anyone else.
Having all plugins PHP7 compliant would be a nice badge of honor for the home page, and would indicate that WPMU is committed not just to great support, but to making sure we can rely on its plugins to migrate to the fastest possible scripting language and hence increased server performance.
Fundraising - 4 errors
Hustle - 1 error
Marketpress - 4 warnings + 8 errors
Moderation - 4 errors
Private Message - 2 warnings - 5 errors
Snapshot - Unknown
Social Marketing - 2 errors
Ultimate Facebook - 5 errors
WP Hummingbird - 1 error
WPMU Dev Dashboard - 4 warnings - 1 errors (!)
By the way, what would make a good plugin is: one that checks compatibility like PHP compatibility checkers (or works alongside it) and pings all of the developers for a request to make their plugin compatible to PHPx.x.
That way they would see that some people rely on their scripts and they may fix it, or even open up the project to fellow developers...