I got my first Dremel over fifty years ago, so they were around then. I find, however, that I don't use it a lot for plastic kits (primarily use it for scratchbuilding or major mods where I use wood or metal).
In addition to the tools you listed, a good needle file set, good tweezers, a pair of good sheers for cutting PE.
I keep two X-acto handles on my bench. The second one is for scraping (seams and putty areas). This dulls blades quickly. When I replace the blade in my primary knife I move the blade to the scraping knife.
Buy #11 blades in large quantity- they are cheaper. The cheaper they are, the less you are tempted to keep a somewhat dull blade in the handle.
Consider both a razor saw like a Zona and one of the super-thin PE blade saws.
Pin vise and set of 60- 80 drills are essential for some work, especially if you get into older planes with rigging, but even antennas of later planes sometimes require fine drilling.