Just noticed this thread today and looks like your trip was last month but did you make it to either site? I went to Ingapirca several years ago and was not that impressed (I'm not an expert in any sense but I've probably been to 12 or so sites in Central / South America). I was with my mother, and she enjoyed them a lot but that was her only experience with Mesoamerican ruins. Definitely wouldn't make a trip specifically for them but if you're in Cuenca (which is a city worth a visit) might as well take the bus out to the site. There's a market there as well which didn't do anything for me but for shoppers it might be nice.
I had never heard of Rumicucho - did you make it there? Worth the trip?
If you're open to all ruins, check out Dougga in Tunisia - old Roman city that I had never heard of until I had a day to kill and was looking for something to do. Drove out there for the day and it instantly became one of my favorites. Huge complex that was easy to spend hours exploring.