Pretty much the same here: decent solid bench, basement, painted concrete floor with no carpet (am I really the only guy who's fumbled a full tray of primers before?), lots of shelf-space, a couple of different types of extinguishers, loads of lighting, etc.
I also subscribe to the one-powder-on-the-bench rule, and if you fill a hopper in any powder-dispenser, whether or not you PLAN to only run one batch that evening or not; mark the powder-hopper (post-it, taped label, grease-pencil, hang-tag, whatever) with whatever is in it. You come back to it a few days (weeks, months?) later & have no idea what you filled it with last time, you'll be glad you did. I have a modified (brass hopper) Lyman and Belding & Mull manual powder dispensers for black powder ctg loading, and may run FG in one, FFG, in the other. It's easy enough to tell the difference in granulation, but some similar smokeless types? I mark the RCBS manual and the Lyman electronic dispensers when I fill them.
If you load for too many calibers, consider investing in some of that cheap coated wire-frame closet-shelf material with the 1-inch gaps from many hardware stores, Home Depots, etc. I rigged up a shelf section raised high enough above the work-bench surface to not lose bench-top, and each of those 1-inch gaps let a 7/8" die in, & held up by the lock-ring. You may never need holes for 100+ dies, but it's easy to fabricate a 'die-shelf' for all you need (plan for expansion). If you have any concerns about flooding in your reloading-room, water on the floor, etc, then that shelf material also sits nicely on top of 1" rings sliced from abs or pvc pipe, 4" or similar, and cabinets, benches, shelves, etc., sit on top, allowing air (& hopefully NOT water) flow underneath. I keep a de-humidifier running much of the more humid months.
Presses: Too many. I have bench-space, but not enough for all the single-stage RCBS or Lee Cast ones, Lyman turret, the Dillon and the Lee progressives, as well as the Lyman & RCBS bullet lubri-sizers, all at once. Besides, I don't need all mounted, all at once, and don't feel like swiss-cheesing my bench-top by drilling permanent bolt/screw holes for every possible press. Solution: Bolt each to a flat of (glued) double-thick MDF or wood, and whichever press I need at the moment I clamp to the bench-top with big-ass C-clamps.
Oh, also: try to keep your electronic or balance-beam scales away from furnace-vents, windows, or anywhere with much air-flow. I also mount the power-bar vertically on the bench-back, so anything I run on the bench has easy access, and in case of problems I can switch all power off at once if needed. Oh yeah, and a peg-board back to the bench, with those little hangers, make pretty good shell-holder holders.
. Hafta be careful when you open up that powder can!
