First, as a random fact, we have more options for level 100 weapons than we ever did for any previous level.

There'll also likely be more in the future, as crafters are able to produce them as well; when the Soldiery cap goes at 2.4 (and likely soldier rates rise), getting a Tomestone from Syrcus for your weathered weapon is going to be even easier. There might be more weapons for various levels introduced retroactively too, although I am inclined to doubt it.

At the point of 2.4, of course, new weapons will be introduced, to match up to the new cap. There'll be very few ways to get them, and that'll be a deliberate choice of design, because they want to ensure that having a high level weapon is something you worked for.

(It's also worth noting, the reason the only high end shield for WHM is the Levi EX Shield is because the only high-end one handed weapon for WHM is the Levi EX Wand, and I think the devs sort of want to shy away from forcing certain classes to pray for more drops to do the same thing other classes get from one drop [sorry, PLDs])