I thought the point that was made is that it will mostly share 5-er interior despite being more "like" a 7-er underneath?
The way I see it, there's no reason why it can't ride as well as the 7-er.. It'll most probably be using the same components and assemblies.
As for handling it is
actually fractionally closer to the ground than a G30, so although it's a taller vehicle, it won't necessarily suffer like a full on SAV does..
unless they decide to tune it that way - and - let's be honest though, this will be tuned for comfort (why
wouldn't it be?), and I'm pretty sure that buyers for this car do not give a flying f*** about it's CoG being <~25mm higher. (Having said that, if you saw the later Nürburgring testing videos, it actually looks surprisingly composed given the absolute hammering the driver was giving it).
The interior will be what it will be... if they don't want to position it squarely against the 7-er in that respect I can understand, and the 5-er interior isn't exactly a bad place to start though.
All that combined with more luggage space than a G31.
So basically - it's mish mash of the best car all-round that BMW currently makes, and the most comfortable. And it's cheaper than a 7-er.
On paper, it's an excellent package - it's just a shame about the face.... (kinda like me really

)