Looking at the planned to get list in the first post I see the Forster priming tool. I have their bench mount priming tool. I like it, but I don't use it. It's a time consuming PITA to load the primer tubes and to set up for each different case. Much easier to use the RCBS hand priming tool.
I also have one of the primer flipping trays, which I almost never bother to use. Easy enough to flip them over when picking them up to put them in the priming tool.
Funnel, I'm still using the spun aluminum funnel that came with the Hornady kit that I first bought. It and the beam scale are the only parts of that kit that I still have and use. I see some pretty fancy funnels out there these days and for the life of me I can't understand why I would want or need one.
I've had one of the short little ID/OD chamfer-deburrers for a long time. I recently purchased the Lyman tools that have a screwdriver-like handle on them and find them to be FAR more comfortable to use. Enough so that I also bought the primer pocket tools that use the same handle.
After reading about it here I've switched to the IPA/Lanolin mixture for case lube and I'm vastly preferring it to the traditional case lubes. A paper towel lined cookie sheet (NOT one from SWMBO's collection!) to roll the cases around on and a pump spray bottle are the only non-consumables needed. Sourced all of it from amazonian reloading supply for close to what just one can of One-Shot costs, and given the typical amazon volumes for me it is nearly a life-time supply of case lube.
I use the light gap test semi-frequently. Good call, didn't think to mention it. I think that most journeyman machinists give calipers an unfair shake, but I also think that most caliper enthusiasts expect far too much from them.
Let me tell you about the carbide jaw Mitutoyo dial calipers that some dim-wit tried to use while the rougher was still cutting. Destroyed the narrow section of the jaws. Those were my first set of calipers. I carefully ground the jaws to remove the chipped section of carbide, but eventually grew to hate the .200"/rev. dial and gave them away.