I like the overall happy endings but with a little sadness maybe or a question left for you to answer yourself. I hate endings that are just totaly vague and don't tell you anything cause it makes the whole games feel empty and like kind of a waiste.
I think ff10 had a good ending
I personaly would have just rather seen jecht and auron die and zanarkend get destroyed or something and see the travis character live or have kamari die since his race was whiped out.