OK, Sean, you asked for my advice. I started reading your thread. My first thought was, "Waddaya asking me for? You want to fit a lot of stuff into a small garage? Go read Jack Olsen's thread, the 12 Gauge Garage!"
But as I kept reading your thread, I figured out, oh yes, you already have:
folding workbenches
trailer receiver mount grinders and vises
above-garage-door loft
Another tip I learned on GJ that I saw you did was the two-armed garden tool holder, two 2x'4s or the like jutting out that hold a bunch of tools in one stack.
I was going to recommend to you a nice bike vise, but nope, you've got one of those, too. Do you have it set up to a hitch mount yet? Once you go bike vise, you can't go back.
Do you have compressed air in the wood shop? Could you bury PEX in the soil to it? (I can see problems in your climate, with moisture in it.) I like to take dirty jobs to the driveway, but I'm lucky to have mild and sporadic winter. I'm also just hooked on compressed air anymore.
I like the ingenuity of your little tool stands, but they are just not enough. Once you have a roller cart, you never go back. Your home garage is just too small for a regular-length one. I recommend you do what Jack (and others) have done, and get the IKEA multi-shelf roller trays. 12 Gauge Garage, post #2569, amen.
http://www.garagejournal.com/forum/showpost.php?p=2695952&postcount=2569
Financial tips from a decade and a half ahead of you: avoid debt, and if you race, try not to get obsessive. Racing is money down a rathole. But ... but.... yeah, I know. I suspect your payoff is the fun you have making your machine work and achieve a certain performance standard? Not trying to prove you're better than Tom, ****, and Harry in your province, then in your nation? That's where my money and time went too far...
Is that camshaft on the wall decoration or is it being stored? One earthquake or natural gas explosion on the block and... OK, I'm a worrier sometimes.
I'm glad you finally got a vise into the garage. Having SOME kind of workbench and SOME kind of vise is so much better than none! I spent 20+ years working in a parking lot, sitting on the ground, also, I had a wooden chair that served as my bench. And my feet got involved. Very primitive. To have moved up from that savagery is just lovely.
Have you considered a block heater for the truck? Not to get it started,we now have EFI and synthetic oils, but just to get it up to temp and blowing warm defroster air sooner? I've been using a magnetic oil pan heater lately on the missus's SUV, not that we have real winter here, but just because she's sensitive about the cold, and I do think that, given enough hours, once the oil is warm, the heat travels up through the pan to block, and air in the sump, and the crank and block and coolant inside get warmed up, too. (It does register on the temp gauge.)
It's a fast/easy joke of a job for $30, with none of the risk of a freeze plug heater falling out. OTOH, I'm sure a freeze plug heater is a lot more powerful.
I disagree with your wife: I'd spray white paint all over those walls. I don't mind the raw wood look, but I'd do it for lighting purposes. You can't have enough light. But yeah, it's less work, time, and money to overlook it and press on.
One more garage opinion:
Those ladders are BUGGIN' ME!!
I want to see shelves there. Not deep ones. Just a lot of 1x8 or even 1x6 boards, many of them. I'd put the ladders up on the wall above the garage door. I don't know how often you use them. Maybe your truck requires them for things. How you'd reach them if they were up there, I don't know. (I'm a goon with long goony arms and often put things up in places that aren't options for other people.) Maybe you'd need a smaller stepladder to get at the big ladders. It's good to have a smaller stepladder in the shop, always ready to go. And a milk crate with wooden top.
Also, I see you've used the plastic shelves, but they're gone now. One way to boost their usefulness is to add shelves in between them. You can just build simple 5-sided lightweight boxes out of lauan panelling, small scraps of furring strips, small nails, glue, some vertical reinforcements here and there, and place on the shelves to make them two shelves in the same space. Unless you're a paper towel survivalist, the spacing on those plastic shelving units can be kinda large.
I also applaud you sticking witih cash, living close to work so you have more time for family and Buicks, and riding your bike to work because you're close enough to work. Those are all good habits in the long run!
Party on, Sean!
Shane sure is a blessing!
Going to be 50 degrees F here today. 
