For me it was just a matter of getting used to the motifs.

But I think they're good because you can single weave after each motif to use the muse right there if you want, so you can see the immediate huge damage number caused by that long cast.

I also think the fun part is to decided, based on what is going on with the fight, when it's the best point to cast the motifs, especially the Starry Sky one, which doesn't do anything until later.