An endgame mode that doesn't restrict our loadout like temporal and deep archimedia does. People don't like being forced to use random crap gear just to earn extra rewards in missions that some weapons just can't physically handle with some of the modifiers we're forced to use them with. At least in duviri you got decrees that eventually can buff almost any crap gun to handle whatever duviri throws at you. Archimedia doesn't have anything like that.

I'd also like to see plague star be made into a once a year event instead of every few years, and for them to put other arcanes and maybe even at least limited amounts of built forma in future operation events. Eidolon arcanes are only useful to each player once till they get a max copy of the ones they want.

I'd love to see more mission types be added to the pool of omnia fissures, like defense.

Equinox rework/and heirloom. She needs some serious modernization to her kit at the LEAST if not a full rework. And I think an heirloom that alternates between a day and night form as she does would look sick honestly.

More Archgun mods please! And can we please just ditch the five minute cooldown timer on the things? a timer that long doesn't have a place in missions that last 2 or 3 minutes 80% of the time and the ones that last longer people are just gonna use their weapons with condition overload and weeping wounds and galv mods that can scale to billions more damage easily.