They just did!! It's called the GTR and Sig.
Gee, the cars haven't been on US soil for a month and guys are whining that they want more. (most of whom haven't even driven a 2.5T CX-5 yet.)
Yes, I'd love to see Mazda do something like what Audi did with the SQ5 but there's only so much a small/resource limited company like Mazda can do. I think Mazda will want to see how the CX-5 2.5T's do in the market before they go much further. Given the very limited production of the CX-5 2.5T's, I think they are proceeding with great caution.
I previously had a 2016 SQ5 as my daily driver for 1 year and about 22K miles. The engine and power was fantastic but the transmission logic sucked and didn't match well with the engine output.
Our 2017 CX5 has a much better balanced powertrain than the previous gen SQ5 did. For the money and considering the relative size of Mazda, I appreciate our CX5 considerably more than the SQ5, and definitely more than any of its direct competitors. The only "performance" SUV/CUV I would consider is a Macan (the PDK is awesome) and maybe the BMW X3M when it comes out (or a leased Stelvio).
We did upgrade the wheels and tires on our CX5 which reduced the weight at each corner by 7 pounds. This did help acceleration and cornering ability quite a bit (looks 100% better too). We will eventually do coilovers to eliminate some of the body roll and then we are set.
Also, the general consensus on this forum a year ago was that Mazda would never put the 2.5T in the CX5. I applaud Mazda for making this improvement as it keeps the CX5 competitive in the quick growing CUV segment.