Can you say more about the context in which you do this? Are you spot-checking data? Looking up a specific value? Something else? How do you do this currently in Aggregate -- do you use filters? Why not do it as part of your analysis pipeline?
See here for the structure of each URL. Again, it might help to know what you want to do with the images. Perhaps the expanded submission table will give you what you need or maybe there's something else that would be helpful.
To be clear (and there's some about this in the post @Matthew_White linked to), the rationale is that general-purpose visualization and analysis tools are huge endeavors. There are many great ones that exist already so over time we want to make it easier to connect to those. Virtually any tool you might want to use will allow you to import a CSV exported from Central. Currently the best live-updating options are through Excel or PowerBI. While the visualizations in Aggregate could be very helpful if they were exactly what you needed, they are hard to customize. Our hope is that by making it relatively straightforward to get a live-updating dataset into a tool that most people have (Excel on Windows -- this is not supported yet on macOS), the barriers to having custom dashboards will be lower.
Note also that the OData feed is JSON and there are lots of systems that can ingest it. For example, see Automating Data Delivery using the OData Endpoint in ODK Central for a description of how to use Kettle for data integration.