Ha I kind of understand, I used to collect lines of whole figures that I didn't care about just for the sake of completion, after I went many years without collecting anything I basically lost that mentality
I've gone through that with many other lines, and I know that when I look back, it's with regret on the money wasted on useless plastic. I look around sometimes, and figures that I paid triple for on the secondary market now mean nothing, let alone all the filler to "complete the team" ones. I actually had stopped collecting entirely for about 5 years or so. I got back in since the Endgame Tony was my last chance to get an Iron Man so I went for it. I was a pretty big Ironfan but kept waiting for "the right one" (meaning the MCU suit closer to one of my favourites from the comics) until there were no more. That prompted me to get back in the game, and here I am with 7 POs and the year's not even started yet...
and now I'll get a figure if I really want it and if it's from something I love, I have lots of stuff just in storage collecting dust and it's truly a waste,
My problem always was that I liked a lot of things, but never knew if I "loved" anything. Pop Culture is fleeting, it comes and goes. So my tastes depend on the day. Then completionism comes in and wrecks me.
I'd rather display a few pieces that mean something to me that have a crowded shelf filled with characters I don't care about.
That's the mentality I started with back in the day, and in regards to 1/6th I've kept at it, but with the increasing number of releases I find it hard to keep true to it. Videogames don't get much coverage, but the comicfan in me is having trouble keeping up with the MCU, especially as the X-Men & FF are coming. The logical side of me says "okay, just get Cyclops, Jean, Xavier, Magneto, one or two villains and you're set", but then I start to wander to variant suits ("well, you can't have Jean and not have her Phoenix form too"), sub-groups ("gee, it'd be cool to have my old fan-made X-Team on my shelf") and so on. You know how it goes. In theory I know that a display is always better when there's less figures and each one of them stands out, but it's hard to restrain yourself... Eh, maybe when I see them "in the flesh" with the new HT price increases I'll be unable to just click the PO button and keep myself in check.
If we focused it just on MGS, and assumed by some miracle we got figures, their price would come around 300 each for me, taxes and everything included. My imediate wants would be Solid & Big Boss' major looks (1, 2, 4 for Solid, PW, Venom & 4 for Big Boss), Raiden's outfits (2, 4, Rising-not counting the HT there), Solidus, Liquid and one or two Ocelots, with Meryl, Boss, Grey Fox and Otacon as maybes. That's near 5K territory and about 17 figures. That's from just one line. Now add all the groups from big IPs like Marvel, DC & Star Wars, Videogames like Mass Effect, one-offs from classic movies and vidya, and the number rises to 200 and doesn't go back down. Obviously one could be sated having just 1-5 figures per franchise, his favourites acting as representations of it. But the first exception ("Oh, I love that so much, this time only I'll get the whole group") gives way to another and another and you've gone down the rabbit hole.
All that said, MGS is basically a dead franchise at this point, so it's all moot. If anything, our only real, concrete chance at any merch is the movie actually getting made.