In the past, I've found Gerrit to be reasonably good. Phabricator, on the other hand, not so much.
Having worked with MediaWiki in the past on CRs, I think this will be a good move to modernize things for them.
When faced with a similar task around the same time at Wikia (now Fandom), we chose GitHub while we were moving off of SVN. I'm glad we did at the time, even without all the additional features GitHub has.
I understand why WMF didn't choose GitHub. Compared to their current stack, Gitlab is going to feel like a serious upgrade.
Having worked with MediaWiki in the past on CRs, I think this will be a good move to modernize things for them.
When faced with a similar task around the same time at Wikia (now Fandom), we chose GitHub while we were moving off of SVN. I'm glad we did at the time, even without all the additional features GitHub has.
I understand why WMF didn't choose GitHub. Compared to their current stack, Gitlab is going to feel like a serious upgrade.