How level do you think shop floors need to be?

My home workshop (which I share with my father in my parents' home) is currently being remodeled, purely as a consequence of the entire basement (in which it resides) needing to be redone for HVAC purposes. Previously, the floor had been a battered cement floor, with noticeable dents and divots that a power tool's mobile base caster could (and did) get stuck in during movement. While I mentioned throughout the project how desirable it would be to have the floor properly leveled while everything was out of there anyways, unfortunately it became clear that professionally leveling the floor was beyond the budget. Instead, we had an epoxy floor poured. So while it's not professionally leveled, the epoxy mostly evened out the inconsistencies, it's a lot better than it was.

What I guess I'm wondering is- is that good enough? I'm in the process of designing multiple tool carts to rehome a lot of our equipment once the shop is done. Those carts will be on retractable casters to wheel out of the way when not in use. I'm wondering if, because the floor hasn't been professionally leveled, I'll still need to use leveling feet and a bubble level whenever I relocate a tool, or if a mostly level floor is sufficient for all woodworking tasks. For standalone projects- for instance, a scroll saw or a router table on wheels- I'd assume that as long as the tool is steady, it will be fine. As for some of the more involved projects though- say, running longer boards on a planer or jointer such that they need a roller stand for indeed/outfeed support, suddenly those inconsistencies seem like they will cause a much bigger issue. 

Would love to get the thoughts of more experienced woodworkers. Have you found imperfections in your floor to impact any projects or tasks? Assuming the floor is "mostly good" would you still opt towards leveling feet for when the casters are folded up on all my tool carts?