What you have done is establish a baseline for maintenance and eliminated a key point of failure. Well done.
I have come to the conclusion that time is no friend to these cars, they do not age gracefully. There are a lot of plastic parts used in these cars and I find there is always something to do, replace or upgrade. Fortunately I am retired, enjoy working on this car, and look for things to do to and for it. With proper attention these cars can be very reliable. There will be other opinions.
A plastic part you may want to look at is the coolant expansion tank in the trunk. If it is white as virgin snow congratulations! If it is yellow like old parchment, then get ready to replace it.