They would indeed.
I am personally pretty convinced that the Oncilla and Tigrina merit specific seperation; in particular by the fact that the two taxa do not interbreed where they overlap despite the fact that the Oncilla is known to interbreed with the Pampas Cat, whilst the Tigrina has been recorded as interbreeding heavily with the Geoffroy's Cat, creating an overlap zone where the population of both species show some level of mixed ancestry. This rather suggests that the Oncilla, Tigrina and Geoffroy's Cat may represent a species cline, possibly also including the three debated Pampas taxa.
The other persuasive point is that genetically, the Oncilla and Tigrina lineages appear to have split earlier, and demonstrate greater difference, than the split between Geoffroy's Cat and the Pampas taxa. As such, keeping these two taxa included in one species would suggest the Geoffroy's Cat and the Pampas taxa should also be conspecific.