Walk into a Cadillac dealer today, and the CTS range is the closest you’ll find to a Euro-brand rival. Available in coupe, sedan and wagon variants, ranging from ample to extreme in performance, the CTS lineup is Cadillac’s current Jack-of-all-trades.

That changes later this year with the introduction of the ATS sedan, which Cadillac feels is good enough to go head-to-head against the BMW 3-Series sedan. Beyond the immediate brand rivalry, Cadillac has some big plans for the ATS lineup.

The introduction of the ATS, according to Car and Driver, allows Cadillac to upsize the current CTS to better compete with BMW’s 5-Series and the Mercedes-Benz E Class. While a bigger CTS sedan may be a good thing, a bigger CTS coupe wouldn’t draw many buyers.

That opens up speculation that Cadillac will build a coupe from the ATS platform that slots in between the ATS and larger CTS in size. That seems to tie with earlier reports that indicated the ATS coupe was dead; it was, but an ATS-platform based coupe appears to be very much alive.

This in-between platform could even be used to create a four-passenger convertible, larger than the ATS sedan but smaller than the super-sized CTS.

That leaves the question of Cadillac’s CTS Wagon. While the wagon version never sold in high volumes, it’s performed well enough to keep it in the lineup. More importantly, it’s attracted new customers to the Cadillac brand, especially in CTS-V guise; in fact, 33-percent of CTS wagons sold are CTS-V variants.

With the CTS wagon returning, don’t expect to see an ATS wagon in the lineup. Small wagons aren’t what luxury shoppers want, especially since they can get better utility out of a crossover like Cadillac’s SRX.