I have calculated that this financial year we will likely just be over the threshold for ftb part A (not eligible for part B as we both work) for the first time. I always thought it the threshold was quite high, but now that we are here, it doesn't feel high iykwim. But I don't feel particularly aggrieved. It would be handy, of course, as my son now needs a few allied health professional services, and they really add up.
But, even when we were considerably below the threshold, we weren't getting a lot anyway, so I don't think it's a priority to make the threshold lower.