I'm a Democrat who lives in Fayetteville and is originally from LA (Lower Arkansas), I don't see how the two areas would mesh at all. The Democrats up here are actual liberal Democrats for the most part, as opposed to moderate or even conservative "Blue dog" Democrats of that area. The party down there is mostly social conservatives with a strong fiscal liberal lean, NWA Democrats are almost the opposite socially and are probably a bit more fiscally conservative.
The worst part about this plan in my opinion is that it started as a plan by a man from Marvel, which is a town not in either district which is so far removed from the third district that the 200 mile gulf can't even begin to describe it. All of the opposition to this plan so far has focused on how it is "partisan politics at it's worst" and such, when in reality a group pushing against it should probably mention how it could be construed as an attempt by the Delta to undermine NWA as a cohesive force. That may not be reality, but it would be a very strong way to push against this gerrymandering attempt.