Been there, done that. I'm not going to take a Lexus to Cadillac threat with any credibility.
I had a 2012 IS250 F Sport which I traded for a 2014 IS because I just couldn't be in a last gen car. But the more sedate look and handling didn't take long for me to trade that for a 2015 IS250 F Sport.
I personally love the more aggressive look of the current generation spindle grills, especially the F and F Sport iterations.
Did I like them in the beginning? Not really, because it was new and it was different than what I had before. But given the choice, I'd take the Lexus spindle grill over most anything else out there.
The direct comparison between my 2012 and 2014 was a stark one at first, but I would never go back to what now seems like an old and dated design in lieu of what I have now.
This IS the design language for all Lexus vehicles for this generation. Until the sales figures dictate a need for a change, don't expect it to.
Alternative? Chevrolet Malibu alienating buyers so nauseously that they have redesigned an average of every two years three times over now.