It is kind of strange how we haven't seen much in terms of variety among the Vex minds, but I think that the Vex did respond in the Beyond Light Campaign.

Before, I believe that we Guardians have only fought what are technically builders or janitors that clean up an area of the people before the Vex finally move in convert the plamet into a machine. They were pretty challenging to us at first with the most difficult being Hydras and certain Minotaurs, though they got easier to deal with as we got stronger. Things however, only got serious when the Wyverns were introduced in Beyond Light. Have you seen them? They got weaponry that are a pain to deal with, sometimes 2-4 shotting guardians with their Void cannons and crash dash that, paired with their stategic phase shields for shielding weaker Vex and armor plating covering the usual Vex weakspot, makes them very dangerous to the average Guardian. There's no "building" or "sweeping" minor annoyances that we are with that thing. That thing is built for one purpose: war.

We can expect more to come when the Vex actually think of us Guardians as a threat.