I feel like the sub in the drop could be WAY more powerful.
In terms of the actual composition, it's really kind of boring. There are lots of things you could do to really make the buildup lead somewhere if that makes sense. Give it some more melodic elements. It would be cool if your drop and buildup weren't exactly the same.
One thing I tend to notice in bigroom tracks is that they really try to make you dance, but this track doesn't really do anything for me. Give it some groove. Having nothing but a kick and one synth in the drop kinda ruins the vibe.