Kind of torn both ways on the new map pack. On one hand, new maps are needed, especially for BTB and Invasion, so that's a good thing. On the other hand, I would like to see some balancing to invasion before I shell out money for it and matchmaking updates to improve the gametypes on BTB. The 800 points price point isn't that big of a deal, it's the traditional Halo map pack price point, so I'm not worried about that.
I just want to see some matchmaking updates (which I know are coming) and some more Forge maps added to matchmaking (obviously also coming) before I put money down on the Noble Pack. The new maps do look very sweet though, especially the BTB one.
For now I will keep playing H3 until that happens, with occasional Reach firefights.