Something I would like to see in this game. Won't make it easier, or anything, just make things a little less grindy. In the legion HQ, you could have 5 upgrades, in total. The The two upgrades I am thinking of can be minor ones, and dependent on the Lexcorp upgrades. The first is when you progress far enough, you can have another heist going on the same night. You are limited to one cash heist, however. The second upgrade, minor one, will unlock the ability to do a total of three heists. Still, only one cash. The other two are relic and tech, or whatever else you need at that time. Along with these, you can hire more henchmen as necessary. One other thing I would like to see added is an inventory system. Not a major one, rather just something that shows which relics/tech you have, and what you may still need. Basically, some quality of life changes to the game. The updates, instead of full upgrades, could be done between nights, since they aren't major upgrades.
One other change to perhaps a new game+, is an ability to speed up upgrades with more money.