I had considered a recumbent, but I'm not ready for it yet. I'm not ruling it out forever, though.
I love the suggestion of the drop bar ends mounted upside down. I was just looking at the ad for the Origin8 drop bar ends. I've been experimenting with other long bar ends that I had laying around, and the issue was that, if they're straight, they give a terrible point of contact with the hand (if you try to point them towards you, or even straight up). If they're bent and mounted so that they provide a grip surface that's high and closer to you than the bar, they can interfere with getting to the brakes. But they've been the winning solution so far - that's what I'm currently in the process of mounting on the bike.
The upside-down mounted drop ends would absolutely solve that problem. The only negative is that, according to the feedback they get on Amazon, they're pretty shallow, so they might not do the trick. But they're worth a shot. Wow! Bolt-on bum bars!
I also love the idea of using the adjustable stem to change the angle mid-ride or even between rides, depending on what I'm expecting to do that ride - I'd never thought of that!
Thanks!