You cannot in any way justify setting the night time in order to avoid fighting actual battles. What's the logic behind it? If everyone did that we might as well be playing a board game.
Battles is what Strategus is about. Prime time battles allow for as many as possible to enjoy them and have fun.
What fun is there in morning and night time attacks where maximum 30 people participates - if even that many - instead of up to ~100, which should be no issue when its prime time.
Morning attacks should IMHO only be done if someone is threatening you at that hour (e.g. S&D terrorism in Strategus 4).
where have you been the last few years
Strat isnt about battles it never has been. Strat has always been about who can hold the most land through whatever means. be that multi accounting mass alliances, shitty attack times etc strat has never been fun for the general member
like all games where you build up over months and take and hold land its not about the fairness of war ^^ its about who can win.
tis why strat is boring. there are hundreds if not thousands of games out there with the same principals and better mechanics. the only difference is we get to fight the battles every so often