I just bought BIA on the DS and I found that there are some screenshots of HH in the game which makes me believe that the DS version will have some similarities with HH. One new thing in the DS version is the ability to take cover behind walls and etc. We all know now that this will be a feature in HH except in the DS version it was as simple as running into the wall and you were pressed up against it. And if you wanted to hop over a low wall or sandbags you simply move the charecter into the barrier and then move into the barrier again and you hop over. It would be great if in HH the cover system is this simple.
Another feature of BIA on DS is the third person view all the time. But I strongly doubt that it will be like that in HH.

The rifle grenade attachment is also present in BIA on DS so it could be in HH too.

So, I have a DS. Would you say this game is worth getting?

yes, however you don't lead a s quad

Well personally I'd hope the cover mechanic would be more like Gears of War's as that is hella simple to be fair but without "forcing" you to take cover if you don't want to (for whatever reason)

In BIA on DS there are new German units called tank hunters qho run up and throw grenades inside your tanks which you're trying to protect. Could be in HH...

Hey, i dont think that the cover system in HH will force you to get up against the wall because in some parts of the video (link below) he is right next to the wall and it doesnt make him get up against it. so i think u will probalby have to push a button to take cover.

http://www.youtube.com/watch?v=oWM_iTYAY0U

I'm not sure but i really wish that Gearbox wasn't concerned with making the DS version and just go full speed ahead with the next gen consoles