Hack of GB Bionic Commando to add the overhead segments back into the game from the original nes version. Or a hack of the nes version to have the theme from the gb version.
A Castlevania/Castlevania III hack that lets you whip in all/more directions like up and down.
I'm not sure about that one... But I wish Bionic Commando Rearmed (J2ME game) had exploding Hitler's head. Shame it doesn't.
Not sure if that is possible, but that + minor air maneuvering would be very nice.
In addition to GB/GBC ideas: Some reworking in Metal Gear Solid GB would be nice.
I - A hack that changes the title screen to Japan's "Metal Gear Solid: Ghost Babel". This should be simple enough.
II - Something to make the Radar better. As in: show FOV of enemies and instead of Snake being a 2x2 square in the radar, have it be a simple white dot or a hollowed 3x3 "+". This should be more difficult.
III - Addition of some Metal Gear Solid PSOne gimmicks and items. For example: Addition of Otacamo Stealth, Bandana, Stinger and PSG-1. Also, addition of "New Game +" that allows you to start with some bonuses (5-7 with Suppressor for completing on Easy. Stealth, for completing on Normal. PSG-1 for completing on Hard. Bandana for completing on Extreme/Very Hard)
III-1 - Otacamo Stealth could make Alert and Evasion untriggerable. Perhaps have it always set to "normal" whenever Alert or Evasion is triggered while you have this.
III-2 - Bandana should simply prevent overall ammo usage but not set the ammo to max.
III-3 - Stinger should just fire a fast missile in a straight line OR use seeking dynamics (Seeks target that entered the line of fire the moment you fire).
III-4 - PSG-1 could pan the screen in the direction Snake is looking while you hold the fire button and fire when you let go, also being OHKO on common enemies.
IV - An Easter Egg frequency addition maybe it could be called "Pime Taradox" for fun. Calling said frequency while fighting a boss would prompt a conversation with the bosses from MGS for PSOne.
IV-1 - During Slasher Hawk, each time you called this frequency, Revolver Ocelot should appear and blurt out a random in-battle quote ("I LOVE to reload in the battle!").
IV-2 - During Marionette Owl, the first time you call this frequency, Psycho Mantis should come in and "read your memory", giving a comment on how long you took to get there, how many times you have been found, enemies killed and rations used ("You are either very cautious, or you are a COWARD!")
IV-3 - Even though it is not a Boss Battle, running from the artillery through the minefield would cause Sniper Wolf to come in and use some of her quotes.
IV-4 - Against Pyro Bison, you'd get Vulcan Raven's quotes.
IV-5 - Black Arts Viper? Master Miller's quotes.
IV-6 - Metal Gear GANDER? Samples of dialogue used by Grey Fox and Liquid Snake in the "intermission" between Metal Gear REX phase 1 and 2
IV-7 - Black Arts Viper finalle? Liquid Snake's quotes.