Worry not about the 'carscoops' rendering, that's a mishmash of various photos which often get touted as 'first pictures of the next generation --- ' not saying that's not close to the production version, but it's just someone's
idea of what the next one will look like. They've taken cues from the Monza concept from a while back.
I'm assuming they're following the current trend for re-skins of the current model, as with the Corsa and (pretty sure) the next Astra, too. Remeber when these were all being designed when the 2007-on recession had hit like a sledgehammer, and the first place to cut corners is design. Now that doesn't translate as 'let's employ cheaper designers who will make uglier cars' but it does translate as 'engines are stuck, they have to meet emissions regs, safety, well, everything's already getting NCAP 5 stars, so basic safety cell/chassic architecture can remain the same. If we change the panels, but keep the underpinnings roughly the same, then we have shaved maybe a couple of hundred million off the cost of design.' (yes it is
that much money we're talking about saving)
Also note that we're already into 7 years for the Insignia, pushing geriatric compared with the industry standard 5-6 years, and it's launched next year. That's another symptom of cost-cutting, everyone's doing it, all cars have had their lifespans extended by a year or two, possibly partially down to the reduced sales of the last half-decade means that the tooling is not yet reaching the end of its usable life.
Irritating coupe-like roofline with poor rear seat access, and awful rear visibility, harsh, crashy handling, and lots of hard interior plastics and electronic handbrakes plus even less things you can work on up your drive are all goiong to be as-standard, however, that's for sure!