When was the last time we had a good mecha anime? Feels like forever

I liked the designs and general concept of the series, the plot made no sense though, especially in the movie
>get rid of gundams because treize is dead and war will never happen again
>war happens again, we need the gundams!!!
>get rid of the gundams because dekim is dead and war will never happen again

Impact Z like 12 years ago