It's more "Name a collection that you'd like to see". It's not so much a question as it is a discussion about retro game enthusiasts and the collections we would want. And I would totally love a Commander Keen collection. I have fond memories of those games, but it'd be interesting to get sound this time.

Okay, here are a few that I would look for.
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Golden Sun Collection:
1. Golden Sun: The Broken Seal - The 1st GBA game
2. Golden Sun: The Lost Age - The 2nd GBA game, with a continuous story to the 1st
3. Golden Sun: Dark Dawn - The NDS sequel that never got enough love
EXTRA: Beyond the Beyond - Camelot Software's only other RPG, originally released for the PSX.
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Mega Man Battle Network Collection 1
1. Mega Man Battle Network 1 (GBA and NDS "Operation Shooting Star" Versions)
2. Mega Man Battle Network 2 (GBA)
3. Mega Man Battle Network 3 (GBA - BLUE and WHITE Versions)
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4. Mega Man Network Transmission (GCN Platformer)
5. Mega Man Battle Chip Challenge (GBA Spinoff)
UNLOCKABLE
6. Rockman EXE Phantom of Network (i-mode Mobile Phone)
7. Rockman EXE Battle Chip Stadium Arcade Game (or at least a video of it for preservation's sake)
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Mega Man Battle Network Collection 2
1. Mega Man Battle Network 4 (GBA - RED SUN and BLUE MOON Versions)
2. Mega Man Battle Network 5 (GBA - Team Protoman and Team Colonel Versions, plus NDS Double Team version)
3. Mega Man Battle Network 6 (GBA - Cybeast Gregar and Cybeast Falzar Versions)
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4. Rockman EXE 4.5 Real Operation (GBA)
5. Rockman EXE WS (WonderSwan platformer)
UNLOCKABLE
6. Rockman EXE Legend of Network (i-mode Mobile Phone)
7. Rockman EXE The Medal Operation Arcade Game (or at least a video of it for preservation's sake)
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Mega Man Star Force Collection
1. Mega Man Star Force 1 (Dragon, Pegasus, and Leo versions) (seriously, why 3 Capcom?!)
2. Mega Man Star Force 2 (Zerker x Saurian and Zerker x Ninja versions)
3. Mega Man Star Force 3 (Black Ace and Red Joker versions)
UNLOCKABLE
4. Mega Man Battle Network: Operation Shooting Star (may as well include it in this collection too)