1) yes
2) the only ones you actually have to save SC to use, is Collection. the rest are highly optional.
3) total domination is more commonly known as subjugation (retarded translations ftw). as of current situation, revivals on dmm are rather regular (so is subjugation actually, since there's usually one running every month)
4) you can say so, for star rush and item collection event revivals.

as for the more on topic, we're usually assuming that we'll get events more or less in the same order as dmm, which is why after fran/waltz should be anna's anniversary event. Lafate's 1st post is listed in order of events happening, just that Fran's was considered skipped and put under faith events because we had Imelia's event first. Fran and Waltz both are unit farm events.