Pretty much. It's best to set a "limit" to certain console libraries as well, like maybe 40 for a home console and 60-80 for a handheld.
Also, this mostly applies to the younger crowd but, KEEP THE GAMES YOU REALLY LOVE OR YOU'LL PAY FOR IT AS AN OLDER KID/ADULT.
I'm the other way around (more console titles than portables, which is really just personal preference and). But I really don't try and go for every title or anything absurd like that. I think I have more SNES games than anything else (about 130-140 at the moment). It's my favorite system of all time, and that's really the only reason why. But, yes, that is a good way to help keep yourself in check.
And I agree with the 2nd statement 110%. I shed a TON of my collection while in college, which I honestly needed to do in order to pay bills and whatnot. But now that I'm back into collecting, it's really killing me. I sold my entire NES collection. I had about 200 titles including a LOT of rare, quality games. Not really any "filler" at all (because I collect in the same way that you seem to). It absolutely kills me that I had to sell the NES games and a lot of my other consoles/games as well.
But the bright side is that I can now focus more on a smaller spectrum of consoles versus trying to acquire titles for 20+ systems (which is tough unless you're making some serious bank). And, in all honesty, some of those consoles and games were worthless to me. I don't care for the Genesis, Master System, 3DO, and a bunch of other consoles that I collected games for. There was a downside to thinning the heard, but also a positive side too. Now I just collect for consoles that I care about
Unless you're like me, finding my original copy of super street fighter II for snes at a game shop with my name still in sharpie! 
Glad I can now take care of it!
That's pretty funny!
I've been a totally obsessive freak since I started collecting. I purchased my first console (NES) when I was 9. I saved up all of my Xmas and birthday money to buy it. My birthday is in April, so you can imagine the hole that about 100 bucks was burning in my pocket at age 9. It wasn't easy.
My parents haven't ever purchased a single console for me. I did the same thing to save for the Genesis and SNES. I remember riding my bike to Woolworth's in order to get there the moment they opened to get my SNES on the day it came out. Those were the "good old days". Nobody else was there to buy one. No mile-long line that was formed 6 days prior. No eBay to hike up prices in the first month or so after launch. No forced bundles. I brought the exact amount of money I needed to buy it, 213.99 (199.99 + 7% sales tax). The cashier thought it was pretty funny that I had figured out the exact amount and had it stored inside some sort of cheap candy container (I was 12, what's a wallet? LOL).
Anyway, my point is that I've kept EVERY box from every console and game I ever purchased, save for my NES console box that my mom tossed out after about 2 weeks. She insisted that it wasn't worth keeping, and that it was too big keep around either way. But, she was really happy that I kept all those boxes when I had to sell games in college to make some extra $$$ because it kept me from hitting her up for $$$ all the time. I remember her exclaiming "WOW! I never would have imagined that all those boxes in your closet were what was valuable, and not the games!"
Don' get me wrong, it wasn't like I had some incredible foresight regarding the value of those titles 15 years later, but, just like now, I liked to have the boxes lined up on a shelf. It just makes the collection look more impressive and tidy, as ALL of you folks obviously know.
(the funniest part about my OCD is that I TOTALLY got it from my mother. She's mad-crazy OCD, but is seriously unaware of it)
