Do most anticipate doing this replacement package again at 200k? Or do folks use some aftermarket products that have proven to last longer?
Oh and switched from 05 4Rr to 13 LC. Not exactly OPs ? but from someone that genuinely loved everything about that vehicle other than interior height and space for a 6’3” person, ignorance is bliss.
The LC is like Prime bone-in ribeye compared to choice sirloin. You are still eating a steak with 4Rr, but let’s not confuse the two.
The old radiator design has been superceded to a better version. If you replaced with the original part (before ~2019) you'll probably need to do it again, if it is the new part it probably won't fail quickly and you shouldn't have to worry about it.
Starter issues are overblown here, IMO. Few actually fail, the problem is when they do it is often without warning, and it is quite tricky to get the truck started, though it can be done with jumper cables, two people, and a very long screwdriver. For this reason many of us that spend time in the boonies do the starter as PM.
If toyota made any updates to the water pump they aren't visible, but the new ones seem to go longer than originals.
I had to do the tensioner/idler/fan bracket at about 150.. they seem to go that far for most.
Cam tower leak was mentioned.. it also seems to be pretty rare, but if you need to fix it that's a big job.
Of all the issues you see talked about, the radiator is the only sure-fire one. Literally every one of these built before late 2018 will need a radiator around 100k. I don't consider this a huge issue though. The part is less than $300 for OEM quality, takes a few hours to change, and is very easy to track. The crack will slowly propagate, and is right on top of the top tank. If you check it once every few fill-ups you'll have plenty of heads up. Many people go thousands and thousands of miles with the crack visible before it lets go.. and even then it usually isn't catastrophic.
Edit: and since you asked about aftermarket.. personally I don't trust anything to last longer than OEM, in this context. Toyota clearly had a design/production flaw with that original radiator, but (eventually) fixed it. Beyond that they use very high quality suppliers for most of the other stuff. There are vehicles where upgraded parts have been designed to address specific issues, but I haven't seen anything like that on these, save for maybe BJowett's oil filter housing. Which is really more about convenience than reliability. I'm using the OEM metal Venza filter cover and have no issues with it.