I'm so on the fence with this topic.
1st ingredient, value:
What's worth more? A very good to perfectly restored Model A coupe, or one with a 3" chop, no fenders, nice engineering, flathead or SBC for power? Odds are that the rod is worth more, and lately has developed it's own sense of nostalgia and fondness. Sometimes they're worth the same depending on how well done, but the rods has an audience of buyers in the 10s of thousands vs the few who'd demand a gennie.
2nd ingredient, effort:
To truely r e s t o r e a Model A isn't as simple as it may seem if your standards are high. Clearly good body work and paint are required on both, so that's a wash. But parts can be an issue. While you can damn near build a whole car from repro parts, they aren't the same. That alone is nearly a daily topic just here. Now that really gennie A will have to wait until you can shag everything you need to really feel what it was that Henry and his boys designed and produced. Repro stuff can get you going, but if judging is in your car's future you got some hunting and hoarding ahead of you. The rod is easier in some ways (been done for decades) and clearly a lot faster to get on the road. "No rules".
3rd ingredient, rarity:
4 million Model As were built. How rare are they? If you want a really good one, you still have to be either very lucky, or you need to travel. Some of that travel has been made easier thanks to the 'net, but even then it ain't easy. But you can get one tomorrow if you want one, just maybe not the body you want. What's the all in enthusiast to do?
We become the last ingredient. The happy Model A owner. I want both. I want a rod and a gennie. I got the gennie, the 31 pickup. The rod has to be a 30-31 cpe. No fenders, Deuce frame, 3" chop. Sacrilege? Not to me because it's what I want. There's cars out there that should never be rodded for sure. Some don't even look good rodded, but that's where the As and other early Fords are behind the 8 ball. They look as normal rodded as they do OEM. At least to me they do. In the end it's yours/theirs to do as you/they wish. That independence will never guarantee good taste, and we've all seen some shameful things done to our lovely little As. At least they don't get scrapped like they used to. My dear departed Dad probably scrapped hundreds of them himself in the late 40s when scrap was high. He'd buy em for $5-15 from behind garages and such, burn em out, and get anywhere from $50-100 for the scrap. All kinds of forgotten cars, not just As. Even given that, while there may not be 4 million left, there's still enough to go around. The best thing that we can do is teach the next generations the best of all worlds related to the early Fords. It's all good stuff.