You did more than 98% of vehicle owners will do to their vehicles at 100,000 miles. Main reason is, because of the list you listed, i suspect this was a $3500 ticket you had to cough up. Very few people do preventative maintenance, and on Toyotas they do less than anyone else because they are so reliable they just keep driving them. Friend of mine drove his 2003 4runner to like 330,000 before he had an issue that caused him to finally do some maintenance to it. Otherwise he drove the wheels off it, replaced tires and did oil changes and never touched it otherwise. Toyota is known for reliability and it shows, all the things you did honestly is great for peace of mind but truthfully not necessary.
Our plugs are known to get around 200,000 miles before they start going bad. Most drivers can get around 150,000 miles out of brakes if they dont drive like a woman in a hurry. Power steering fluid flush and change..... Meh i've never done that on any vehicle.... Our transmissions are "no maintenance transmissions" for a reason and you are not supposed to touch them. I drove my 1GR-FE tacoma to 275,000 miles before selling it and never touched the trans, diff, or power steering. Same with my now 230,000 mile 1GR-FE 4runner. I havent touched the trans, diff, or power steering fluids. You should be golden.... You changed things nobody does, i dont think you are going to hurt anything.
