I'm assuming DW7 is Dynasty Warriors, in which case awesome. If you do get that, let me know how it is. I bought 6 the other weekend for like $20 and have yet to play it, but I used to play a couple of them back in the day on PS2. Love me some mindless action. Haven't played Homefront, so I don't know about that.
AC:BH I have and love. I think it was the best game out of the series so far. I really haven't played much of the multiplayer as it was kind of hard to get matches. The story was kind of lacking towards the end as there were some really frustrating and annoying missions. As for the gameplay though, the combat has been improved greatly over the first two. The free running/climbing feels a bit tighter, even though there were times where he was jumping in odd directions.
If you do like mindless action, might I suggest Earth Defense Force 2017. Greatest game I think I might have ever played. The graphics are cheesey, the gameplay is kind of broke, there really is no story, but it all fits together like it was really done on purpose and that makes it hilarious! This is absolutely one of my favorite games of all time ever! When I picked it up about two years ago, it was $20 brand new. It had only been on shelves at that point for a couple months too. They made a sequel that's being released in early July (around the 4th I think). It will be $40 brand new. I'm really looking forward to it!