The quality threshold for inclusion is low (the W1.0 team have selected by popularity/importance rating). Most tags (citations, cleanup etc) will be removed from the articles before release. Apparently, quality ratings will not appear in the release version.
Because of the limited time available, the Milhist criterion for inclusion is "can we live with this"? In practical terms, this translates to C-Class. This means any article which scores three "yesses" or more on the B-Class checklist. Articles achieving this level will not be opposed by Milhist. Please complete the B-Class checklist for any Start-class articles on which this hasn't been done to determine whether three yesses apply.
Please look at the quality class of the article and read the "Comments" column. Decide whether it meets the criterion for inclusion (in most cases it will) and update the "Action" column with the following tags:
"KEEP" - this means we will not oppose inclusion.
"USE LINK" - this means the link will be passed to W1.0 as the version to use. The links will be passed to W1.0 altogether once the checklists are finished.
"IMPROVE (reason)" - reasons will mostly be "refs" or "review" (see "Other action" below).
"REPLACE" - this is used only for articles which are below C-Class[a] and covers two actions. The first is that it will trigger a removal recommedation (this cannot be guaranteed as the final decision is not ours). Suitable replacements will be recommended to the W1.0's review team as a separate exercise.
Other action: any FAs which no longer meet FA standards may be referred to Featured article review. Milhist A-class and GA can also be referred for review at WP:MHR#A-CLASS or Wikipedia:Good article reassessment. If you feel like doing this yourself, please do so, otherwise leave a note here. The reviews will often lead to the article being improved.
^a: The article is better developed in style, structure and quality than Start-Class, but fails one or two of the criteria for B-Class. It may have some gaps or missing elements; need editing for clarity, balance or flow; or contain policy violations such as bias or trivia.