Konami doesn't put effort into anything except Metal Gear anymore, so a Castlevania collection, or at least one that's done properly (like with the Lords of Shadow collection which is just Lords of Shadow 1 and a voucher for everything else), probably won't happen. But I would love to have one.
Capcom doesn't seem to like making money anymore, even though they could just re-release the same Mega Man collection every generation like Namco does with their thing and the Mega Man fanatics would buy them all up, so probably won't happen for a while at least.
Nintendo, as much as I love them and think they get a huge amount of unnecessary flack, definitely are weird when it comes to stuff like this. But it's possible Mario could get something since even Kirby got a(n awesome) collection. But then there has been a (sorta) Zelda collection that was on the Gamecube, but if I recall that was a promotional thing and not a lot of effort was put into it or anything. Still nice to have the ~4 games on one disc though.
I believe Square Enix released a collection of Final Fantasy I-IX in Japan. Kinda weird we didn't get it considering how much people in the west just eat up the earlier titles. But then again, those are all also quite easily available by other means.
Really there are tons of possibilities here that it's strange you don't see more of these released. Especially if it's not a remastered sort of thing. The Kirby collection is great, as well as the Metal Gear one and it seems like it wouldn't take a lot of effort or a lot of money to produce these and they're pretty much guaranteed to sell decently.
On a similar subject, I've wondered why hardware companies never re-release any of their legacy consoles. Retro gaming is so huge right now, and you've got plenty of people buying those Retron consoles as a cheap alternative, why couldn't Nintendo do a small run of new NESes? Or Atari manufacture some more 2600s? I can't imagine it would cost very much to manufacture these and they would sell insanely. I know it would be more difficult for Atari and probably even Sega given they are merely a fraction of what they used to be, but they could probably partner with someone. Can you imagine buying a brand new SNES or Genesis? Awesome.
I didnt know about that one. But it mentions Metal Gear solid. Does it have the first 2 from the NES on it? The first one is the best one!
Yes, but they're the superior MSX versions. It's also worth noting that Metal Gear Solid 1 is not included on disc - you have to download it. Not too big of a deal since they really packed in a ton of content and MGS1 is still fairly easily accessible if you don't already have it.