[patentnerd]

To be clear, patent "eligibility" usually refers to the requirements of 35 USC 101, i.e. any new and useful method or machine. Novelty and obviousness come later, hence OP's term "potentially patentable." The point is that pretty much any software process gets you past the initial hurdle.

And obviousness isn't as easy to show as you imply. Everything has to be based on prior art, which isn't always readily available.

Clarity is subjective, and even claims that seem clear can get twisted around once litigation starts. Attorneys are masters at this.

I'm just pointing out that it's not as easy as simply getting better examiners, although that would certainly help.