I can definitely understand the scenario of skills outpacing justificable finances to install PE railings. There are certainly a lot of those railing on Bismark and once you've put in one rail, it's not much of a challenge to put in others.
I built several WWII surface ships for my father when I was still a teenager, and my skills weren't nearly what they are now. Like you, I could easily do a far better job on them now, and although I appreciate the effort that others have done on some, my interests don't lie with WWII surface ships. WWII U-boats, for sure, and perhaps a PT boat would be interesting, but not any others.
Good thing you have so much more advance warning for the Hornet build. I've been there before too (with the wife volunteering me for something that wasn't my cup of tea - not building Hornet). Fortunately, I have her aware enough to mention that such a build might need a year, not just a few summer months.