Thanks for the replies, everyone - I actually got a much bigger response than I was expecting @_@
It seems like the overwhelming opinion is to hold on to my collection, for one reason or another, which honestly I'm pretty happy about; I think most of you are right in that once the opportunity arose for me to actually show these things again, I'd immediately regret anything I sold.
That being said though, I think there is still some room for thinning the herd a bit. I've already made my collection story-based (my own story

) as a way of enacting some population control: while there is the occasional erroneous figure I can justify into my collection by pulling something out of my ass story-wise, for the most part it prevents me from buying anything unnecessary since "it doesn't fit into the story". On the whole, my collection is primarily Classics/Universe/etc-focused, but in truth it's whatever-the-hell-I-damn-well-please-focused

So, I think I will be going through my collection to see what can be parted with anyway, but thank you all for helping me decide not to get rid of things just for the sake of getting rid of them :3
On a side note, G1 has always been an interesting line for me, collection-wise. I've never regretted anything I've bought, but when it comes time to display that's usually the first line that gets boxed, in favor of more recent/modern acquisitions. So, if I were to purge on the basis of displayability (which I'm not, just bringing up discussion) it would make sense that these would be the first to go. What about you guys, is there a specific line or set of figures you'd sooner part with than others? G1? G2? Movieverse? And why?