Well we think we have one of the gap-fillers for your list (almost) in the form of the 3-way adjustable ones that you mentioned earlier.
I say "almost" because the draglinks are generally normal sized units, or only nominally stronger than stock. So it's the tie rod ends to a certain extent, but especially the tie-rod itself that is stronger by a mile.
Luckily it's rarely the rod ends or the draglinks that are the failure points when it comes right down to it though. It seems to be almost always the tie-rod itself.
So these kits with their slightly beefier rod ends and substantially over-qualified tie-rod fix that issue right out of the box, so to speak.
If I remember (and I just posted this a week or two ago, so the info is around here somewhere) our tie-rod is 1.125" solid chrome-moly steel rod, so is
VERY strong.
And it has the other positive qualities you're looking for. Proper draglink length and location. Proper angling of the draglink's lower end. Plus the beef.
And like you mentioned, you can simply leave the tie-rod's tapered hole for the draglink oriented where it is, and flip the rod ends over to the top of the knuckles. Tighten back down and away you go. No re-reaming needed other than the knuckles.
One additional, though slight, advantage to this design too, is that to a minor extent your custom setups can be tweaked a bit to make sure that the draglink and trackbar are parallel. Since each setup is different you sometimes run into this issue because often enough, just going TRO does not a perfect match make for draglink angles with a stock pitman arm and whatever custom riser/lowering method you're using.
But by twisting the tie-rod a bit you can lower or raise the lower draglink end a bit. This is only within a very narrow range of course, or you start to negate the benefit of keeping the draglink end pointed at the proper 60° upward angle.
But if all you need is a slight tweak, you can do it and not loose all of the anti-roll properties.
To one previous question, I believe that Ruff Stuff offers the passenger side rod end in either taper so it's already set up for either over or under. Your choice when ordering so I don't believe it costs any more one way or the other.
It's already tapered in one direction of course (I forget which way, but I believe it to be TRO already) but they probably enlarge them for the larger rod end either way. After all, it was never a draglink connecting point remember. It was for a steering stabilizer shock mount.
I know we need to put more information on our web pages for these parts. Was just talking about that last week but have not moved forward on it yet. We really need to put in at least some of the more essential details, rather than leaving it up to the viewer to know it all intuitively!
So there 'ya go. A little more info to make your choice even harder!
Paul