So far there's no information that was released by ED so far that indicates that "DCS combined arms" is a step in the dynamic campaign direction, at least not in the near or even medium term future. From what I read so far regarding "DCS combined arms" is that this is a step towadars having more playable aircraft and other playable vehicles/platforms (land vehicles, perhaps?) and that's it!
So unless I see something more clear regarding dynamic campaigns on DCS, the "DCS combined arms" or "DCS world" or whatever they want to call it is equal to having static, dull and without any replayability value campaigns!
What I see is if Flexman and AD joined with DCS the result would be an Apache (and perhaps a Chinook) in the same static, dull and without any replayability world/campaign of DCS! If the only other alternative for Combat Helo that that doesn't mean a "merge" with DCS is having "nothing" than I guess I prefer nothing. We already have DCS, we don't need great ideas of dynamic campaigns (and other great immersive features) being lost by merging with DCS. Sorry, this is my oppinion!
Resuming, I have absolutely NO interest in sims without any sort of dynamic campaigns.
Fortunally for me, I will still have the Strike Fighters series which as opposed to you I prefer its dynamic campaign A MILLION TIME over the static, dull without any replayability of DCS campaigns. I will also have Wings Over Flanders Fields which will also have an awesome dynamic campaign (see, in this case there was no need for "massive" amounts of money to make dynamic campaigns
) and of course I will still have Falcon 4 BMS or FreeFalcon, so as you can see I will still have alternatives with dynamic campaigns in the future even if Combat Helo doesn't come up (which I hope it doesn't happen, of course). Oh, and of course I was forgeting about the modded EECH as well!
Like I already said here in this post, a company doesn't need to have "massive" amount of money/resources to make dynamic campaigns as you said, a company just need to be smart managing it's resources, specially if they are scarse - For example in the DCS case: the ED guys instead of wasting resources making pointless aircraft like the P-51D (pointless for a modern warfare scenario which is what DCS models) they should use those same resources to make a DYNAMIC CAMPAIGN! Period, over and out...