The American Civil War remains my primary interest, both in studying and in gaming. I have a good sized 15mm collection for Fire and Fury (Brigade and Regimental). Once I add some more Union cavalry, I could pretty much play any scenario. I'll call this project 90% done. I also have 28mm armies for Pickett’s Charge (tactical) and Sharp Practice (skirmish), say about 80% done.
After the Civil War, my next gaming love is Napoleonics. I have been diligently building 15mm armies over the years, so I can field French, British, Austrian, Russian, and Spanish armies for just about anything. I use the 15mm figures for Age of Eagles (grand tactical) and General de Brigade (tactical). I would say my forces are about 80% complete, although this is one period that always calls for more troops. I also have decent French and Austrian forces in 28mm for skirmish gaming using Sharp Practice, and I could consider that project complete.
One project that has stalled is Napoleon in Italy. I was planning to use the outstanding Eureka 28mm figures to fight the 1796-1800 campaigns. I have all the lead; I just need some time to get painting. This project is stuck at about 10%.
Ancients, from the dawn of time to the fall of Rome, has always fascinated me. I have a number of complete 28mm armies for Warhammer Ancient Battles (and its descendants), all 100% done. I started a 1/72 scale Trojan War project for for Saga. I have finished the Acheans and need to paint some Trojans to fight them, so 50% done. I have started some 15mm ancients armies for . . . something. I have a decent sized Macedonian army, a large Greek hoplite army, and a few units for Caesar in Gaul. I haven't found a set of grand tactical rules that really do it for me, apart from Commands and Colors. Call this project 30% done? I also have a bunch of 1/300 triemes for ancient naval gaming, but I haven't painted a thing. This is 0% done!
I bought 28mm Saxons and Vikings for Saga, but I haven't painted much, so about 10% done.
I have good sized 28mm AWI armies for British Grenadier and Sharp Practice. I could use more troops, especially Hessians, but this project stands at about 90%.
Jon's latest game convinced me to buy a bunch of 1/72 WWI aircraft for Canvas Eagles, but the models are not even here yet. I also want to try Through the Mud and the Blood in 28mm, but I only have eight figures painted.
Lastly, I do like gaming World War II. I have a few 15mm armies for Battlefront, 100% done, nothing left to add. I have enough Germans, Americans, and Soviets in 28mm to play Chain of Command, but I really want to get some winter troops done for the Ardennes, so this project is sitting at about 70%.
I think two years of solid painting could see me finish up all my incomplete projects. Another two years would allow me to game anything I wanted.