It's suited for all use cases, but for big companies, the data might be crippling, so an add-on tool to analyse the data would be a good companion for GSC to solve this issue. Therefore, I think it's suited for any use case with some add-ons and companions needed for analysis.
KeywordSpy is appropriate for most Internet Market research companies. I would not suggest it for a corporate marketing department unless it's a company with a very larger budget. This is also not a tool for small freelancers even though there is a free option, to get the best benefit of KeywordSpy it's best to use most of its features and options and this can get pricey.
Google Search Console insights is a great feature which provides an overview of my top content, how my new content is performing, etc.
It gives detailed information around backlinks - who is linking to us, how many backlinks do we have, how is the internal linking within the website, etc.
I like the graph feature that shows how the website is performing overall in one month, three months etc. Seeing the graph can help us understand whether it is trending upward or downward and we can shift strategies accordingly.
More training resources would be an asset. A beginner is given the power to completely destroy a sites search results at the push of a button. Likewise it is a powerful tool to enhance search results also.
An option to take care of multiple versions of the same site simultaneously would be helpful. An option to use the same validation script across all versions and administer them simultaneously would be a time save (i.e. non-www, www, http://, and https:// versions of the same site).
It's easy to use, but some features are lacking a clear explanation. Somethings don't always match up. For example, the Core Web Vitals often doesn't match what you would see in the Chrome Lighthouse report or the Google Page Speed Insights tool. The tool itself is a little too basic and has to be used alongside other SEO tools and other Google properties such as Analytics
As it is a free tool, you mainly have to rely on their knowledge base and forums. Google has provided in-depth guides and KB for every function of the search console. So, you can refer to it in case of any problem. You can also ask questions on their forums but direct support is not available.
SEMRush is a supplementary tool we use to provide competitive analysis. While it does, or should, provide the same data that Search Console does, but I only fully trust Search Console when it comes to basic performance in Google for the sites we develop and own. SEMRush, and other products like it, does provide much more in-depth insights that can help drive business decisions, including site performance on other search engines, along putting organic and paid search performance in one spot. However, SEMRush costs money while Search Console is free.
Most SEO and market research tools offer what KeywordSpy has but are not as detailed and in one place. Consequently, where you can do everything at KeywordSpy, with other tools you find you have to purchase multiple tools or subscriptions from different providers which also don't integrate with each other. KeywordSpy makes your research easier and more efficient.
Given that this is a free tool, the return on investment has been particularly high - we've identified and addressed a few site issues that could have meant a reduction in search traffic.
Our organic search traffic has been on the rise in part due to the insights gained from the search traffic analytics provided within the console.