Sorry if my English is bad - not native speaker.
Is there a way we can really get Bioware's attention to this matter? It's one thing to simply discuss the problem, but addressing people who have power to change something is completely different.
I think the main problem is this: the game seriously lacks good side quests. If there were more unique locations with less random enemy encounters and scripted events, it would be only logical to give some good schematics/armor as reward for completing the quests. There would be no need to place good stuff with ridiculous drop chance into random chests all over the world. But that's just a general complaint and this is not something that can be changed.
Frankly, I can't recall if there are quests that have schematics as reward. Ah, wait, there's "Wyrm Hole" in Crestwood - you get Warden Scout armor for that one. And that's it.
Yes, it's nice and interesting to find something cool while exploring, but it never happens like that in game! Mostly it's like this: I waste 15 minutes to climb to a spot where I see a chest and I get some random crappy gray loot. Yay.
Not saying that everything should be fixed drop, but some things definetely should. Game should be fun, not frustrating. And since I hardly ever get good stuff without abusing reload button, it already counts as frustrating.
You can literally play hours before you even start suspecting that there are more schematics than you have. It's okay when you play for the first time, but at second, third, etc. playthroughs it surely is not okay. And this can't be solved by saying "Hey, don't play that game anymore". Because there are more things to do there! I played as elf, now I want to be a qunari or a human. I want to try different romance options and explore everything that can be explored. And somehow I don't want all my characters to wear the same crap again and again while I do that. Also most of schematics are pretty much the same model with a few alterations. So I want more schematics and unique stuff. I want variety.
But to get that you need to farm. Farm in my Dragon Age. This is an outrage. "Farming" and "variety" should never be in one sentence.
I don't know what can be done - provided we actually get Bioware to do something at all. I would suggest increasing drop chance or adding a perk.
Ffs, anything would be better than current system.
Is there a FAQ? I'm new to cheat engine but I would kill for getting all the stuff I want at this point. 
So would I.