Do you think conjurors can get more specific results as they become more advanced in their art?

It seems like "yes?" Based on the 2920 series and things Divayth Fyr wrote.

In 2920 that jilted Dunmer lady could conjure a Daedroth by focusing on a color and a feeling associated with that color.

In his book about Daedra, Divayth Fyr was said to have discovered the Xivilai by looking for something similar in temperament to the Dremora, but with a greater independent streak.

It makes me wonder if sufficiently powerful conjurors can nab EXACTLY what they're looking for from Oblivion- "Dremora, kynmarcher rank, methodical and cautious temperament," or, "Xivilai, unaligned, currently high out of his mind on Smudge."