I think having a random affix so long as they are level appropriate gives gear a much wider prospective user base and thus chance of being useful. I can name literally thousands of pieces of gear that I am unlikely to use because of one affix being "off" which is of course also possible with random affixes on named stuff in this case if I "need" a certain affix and the other static affixes are a good fit then I actually stand a chance of using the item and I might even keep playing a quest in a non farmy way to eventually maybe get that right affix (while also trying to trade for it and keep an eye on the AH's for it) on the other hand the same item with all static affixes means take it or leave it. I have plenty of gear I use with 1 or more useless affixes. I don't agree with the idea that random makes this any more or less of an issue.
In the case of this shield I have a guards build FvS that plans light and good guards to get amped up by shield of condemnation. That shield is nearly perfect wish it randomly dropped as either a large or a tower (which is another way they could put some freshness and range or diversity into named loot, a greataxe version of eSoS but same stats? Yes please heavy, medium and light versions of named armor? Yes please sir may I 'ave some moar?!. But, back to that shield say for example that random affix could be say: superior radiance lore, or devotion 120, well even something like the affix that gives more Turn undeads (for the ED attack that does light damage but uses turns in my case) Hallowed? Or for that matter sheltering 14 (saving me a blue slot elsewhere). Now if that randomized affix can be an augment (something I'd love to find out from the devs) then there's a small chance of a red augment on the EE that has purple... then I could slot 120 radiance and devotion, while using celestia (which doesn't have a red slot) then wow would I be on the lookout for that shield.
I think people often lack imagination when it comes to gear, and they want every piece to fit into their own gear setup as a straight best in slot upgrade.
If you can't stand the idea of an item having a broader potential user base don't farm for them. Get your xp and move on just like you would with 90% of the quests that have highly specific gear that is useless to your build despite not having any randomness.