It starts off initially as fun, but as it progresses it is repetitive. There need to be new challenges of some sort to overcome or something that requires some strategy or decisions. I get the idea of it being an "idle play" game, but it needs something to hold the attention long term and be something players want to replay or even just keep playing.
A small thing that bugged me was if I accidentally build the wrong building there was no way to cancel it. It would be nice to be able to do so before it started to be built.