"I'm going to list some things which may not be as surprising or important as the future information, because I have a poor model of you and my capacity to sort information here is not as good as I prefer. There are things it would be dangerous for you to scry on my homeworld even if your scry would go undetected, including at least one entire language, it's bad for people who know it. There's a cheaper system for getting more limited kinds of information from the nearer future – probably hours – that I would bet against you replicating but seems somewhat more plausible than the god-like flow thingy. If you try to manipulate time in a space with sharp internal corners, you might get some hostile people – tentacled quadrupeds with long snouts and sharp teeth – who specifically have a preference for eating sapients showing up. If you replace the sharp corners with smooth curves before doing time manipulation research, you might get some other people – small blobby quadrupeds with no teeth and bright colors and lots of eyes – showing up. They'll panic and try to poison you but it's possible in principle to build safe enclosures which they'll enthusiastically cooperate with living in, and they can be safely used to produce useful materials, a process they will also cooperate with. They eat plants, but by slowing down their growth, not directly. …looking for them may be a good place to start scrying, they don't do anti-scrying wards that I know of and not a lot of people pay attention to them. There is a not-really-a-faction that appears to approximately be opposed in principle to order and law to the point of not wanting to predictably do things that appear to be in their interests, I don't strongly expect us to run into that but it is a way people from my world can be. There is a species whose central members enjoy destruction for its own sake and also appear to actively disvalue trade and negotiation attempts, which I also don't expect to encounter."
"Uh. The information it might be dangerous to receive problem is significant, there's creatures that try to erase themselves from the memories of direct observers, and documents in fundamental incoherent informational states that it can be dangerous to use automated procedures on, and things like that, including some I can't talk about. Historically there were allegedly alternate truth values that weren't true or false or intermediate as well as concept-destroying weapons, I don't know much about that but it sure was surprising to me when I was told about it."
"I am trying to do a good job answering your question but strongly suspect I am missing things due to my memories being poorly sorted for this task."