Nanomachines?
Honestly, I felt it was such a lost opportunity in MGSV when Venom is in the jeep with Skull face who goes on to monologue for like 10 fucking minutes and Snake wasn't interrupting every other sentence.
"I was born in a small village..."
"A Small Village?"
"They took away my language...."
"Language?"
"A Weapon to surpass Metal Gear"
"Metal Gear?"
I'd honestly be happy to have a PC port for all of the games other then MGSV and Revengence. Okay, a PC port that is readily available (MGS1 and MGS2 have ones but apparently they are easy for find anymore). Since my PS3 went on strike a month ago and now I can't play the Legacy collection unless I emulate it, yeah.
If any Metal Gear games need remaking, it's the original two. As in, not Solid, the originals. Update the graphics, update the gameplay, update the story, etc.
Yeah, I hate to break it to you but that's pretty much what MGS1 is. It cribs so much from the first two games(I can provide a small list if you would like, but there are specfic scenes and gimmicks) that trying to remake them are inevitably going to run up against "Isn't this just MGS?"
The only thing you'd really get out of MG and MG2 being remade is getting to see Big Boss before he became the WORLDS BEST MERCENARY WE ALL WANT TO BE LIKE! and even then he's only actually in each game for a handful of minutes(and the only actual conversation he has with Snake in MG2 most notably does not have a Darth Vader-like confession where he tells him that they're father and son that MGS retconned in there).