Although I see where you're coming from in the respect of rares, I feel it's harder to pinpoint where it's at exactly. A few questions always comes to mind when I don't see any in quite a while.
"If someone is bountied and the items go into a bag for both the bountier and the collector of the bounty, is there an actual rare check/purge for items in those bags?"
"If the items are in the bag and aren't checked for the purge, how would they ever go back into circulation?"
"How are some characters purged, but few manage to slip through the cracks and not get purged?"
Obviously the first two questions I merely ponder if that's why rares seem to be out of circulation for a while. The last question I've actually come across a few times in the past where I'd log on to a character for 30 hours one month, but then stop playing them for 2+ months and find that they were never purged at all and I didn't know how. Having multiple characters probably doesn't help much, but usually in my case I'll have 3 to keep me occupied for varying reasons. Training character with very few to no rares so I can do homework while also relaxing to looking at the words flash across my screen in the background. Another usually is my main and they're decently equipped, but not decked. The last one is usually my discovery class so they're capable of identifying things I haven't seen before and I'm more apt to push the boundaries to see what I can kill with those classes.
There are some rares I haven't seen in months, but the other item that's decent they have once a week or twice a month. Sabatons? +4 hitroll, -2damroll, and refresh spell added bonus? I haven't seen it in in probably 3 months now. I make sure to check daily physically when I can, and when I can locate items, I still can't find the damned things on any player character at all. The Club though seems to be in twice a month at least, and I consider it garbage in most settings. Sure it can poison, but I'd rather just get the poison barbed gauntlets because of the saves and at -1 hitroll it's not a complete disaster making it hard for you to wreck your opponent. If you can solo most of the end game areas though you can usually find the really good items in. If you're like me though who gets bent over and taken easily because of the classes you play, it requires groups and often times we don't have those during the times I will be playing. I feel that the area we seem to lack the most in are 15-45 or so. The items in the Blissful Falls I feel are far too good for most people even at 50. Knock as a spell for classes who can't pick locks and the doors can't be passed? As long as I don't need the rare spot, I keep those things. Gurumba has one for sale and it's 750,000 gold which goes to show how useful it really is. Faerie Fog and +enhanced damage? To a lesser degree it's useful, but still good to have even at 50. Stone skin? That's amazing, no more consumables and pretty good armor rating is more than worthwhile to keep this well into being level 50.
The nonrare equivalents aren't bad per se, but I wouldn't want them either in some situations. A lot of EQ could be buffed up or removed entirely from the game if need be because most people wouldn't ever choose to use it even in 1.0. The question is, where do we start, and would there be a point in doing so? A lot will have to deal with who knows what EQ the best too. @Kyzarius may find it easy to dress both because he knows exactly what to get and does well in PK so he can get the items from people who wear them. In my case, I don't have locate object most of the time anymore so I don't know what is in without physically checking and I don't want to spend 40RP points on the spell even if it means I wont know for sure about the items being in or not. At 50 I feel it's slightly easier to find rares, but the Blissful Falls ones seem to always be out. Though I think the gauntlets within are probably the best in the game since it's not rare, you can get it up to +3 hitroll and +1damroll and if I recall correctly it's better armor rating than the rare equivalent. It has forced me to look for more alternative items, but I've also not been able to find some of the other items I used to find in abundance. I have had to rely mainly on Merchants because of it which isn't bad, but it would be nice to see an increase in those rares sometimes.