Will Contra 4 be localized as "Probotector" in Europe btw?
Speculation here, but...I would be a little surprised. As far as I know starting with Legacy of War (developed in the UK) it's been changed to Contra, and I believe it's remained that way through Neo Contra. Not sure.
Also, don't forget Operation C which also got Probotector-ized, although the Game Boy Collection release (with the cool color game selection screens) seems to be the Japanese release of Operation C with only a name change in the title screen/selection screen (you'll notice that the mini-portrait is taken from the box art/sticker label of the Japanese release).
I'm just asking because it would make little sense to release "Contra 4" in Europe since there are no Contra 1-3 there.
Gryzor 2?

Konami has made some odd changes to brand names at times for strange reasons, although since this isn't Igarashi we might see a more rational approach.
For what it's worth, I think Probotector 2: Return of the Evil Forces has a nifty title screen and the characters look cool.
The Mega Drive Probotector was a low point, though - butchered the character selection.
I prefer the original men in Contra, but it would be great to have the Robots as secret unlockables.
I second this motion. It was great that the developers of Hard Corps paid homage to Probotector by throwing in Browny; surely throwing in a few robots as "extras" wouldn't hurt the feel of the game.
What I would like are character-held weapon models that change depending on the weapon (generic weapon models are lame), and I'm also a fan of Super Contra-style weapons that resemble the actual one. Of course, that can lead to confusion...it'd be nice as a menu option though.