Well, some ideas you just have to go make some chips to learn what you really need to do. Some ideas you need to wrap your mind around for a while and then just go crank it out. Some ideas you need to do the 2nd first and then the 1st 2nd before going back to the 2nd before getting back to the 1st to make a real part. (Clear as mud right?) I'm somewhere in the middle. Fortunately all the other projects and ideas help with the hard won knowledge and experience of the chip making process. There are a number of approaches and cost is a major factor.
For example its pretty hard to beat a preloaded ball screw nut with some spring pressure on it. Ok... so just make it with top quality ball screws right with antibacklash preloaded drive nuts? Not if you have a price target. Top quality ball screws alone without the cost of the rest of the parts of the machine cost as much as some machines. At the opposite end of the spectrum are 60 deg V thread lead screws with simple brass (or bronze for more money) pinch nuts. Cheap, effective, and somewhat accurate ones can be had, but at the cost of long term life and accuracy and uneven wear making it more complicated as your machine ages.
How about using a combination of things for a compromise. Delrin wears very nicely, but it has a load coefficient that will destroy it pretty quickly once you go over it... once. Backlash reduction... elimination... Backlash nuts work, but many machines can apply more force than the springs can take and when pushing hard you can lose your compensation, although repeatability on the same cut will be decent. Beef up the spring? Then you are working your motors harder too. Get bigger motors you say? Then your price goes up.
I said was "playing" with the idea. LOL.