V+1 checks for non-whitelisted users are missing some linters included in V+2 voting checks.
In particular, the 'mediawiki-core-npm' job (part of V+2 checks) does JSCS checks, but the 'mediawiki-core-jslint' job (part of V+1 checks) doesn't. This discourages new developers. Example change where this was a problem: https://gerrit.wikimedia.org/r/#/c/182652/