Many clients request forecasts for keyword rankings, traffic, and conversions/sales for their business to estimate the overall impact of an SEO campaign.
There is this resource on the Ahrefs blog that utilizes scripts to do so: https://ahrefs.com/blog/seo-forecasting/
What I'd like to see is a new dashboard where we can add regex to filter out branded, and also add a list of keywords we'd like to run the forecast for (our target keywords).
From there, this new report would look at current keyword rankings, historical growth/dips in keyword rankings, estimated search volume, search volume trends, DR/UR for the top ranking pages across all of those keywords, and use all of these data points to forecast the SEO impact of optimizing for these keywords.
I believe this would be an extremely valuable report that in-house and agencies alike could use to better sell their SEO services, making it an extremely valuable resource.
If you're able to also connect Google Analytics sales/goals data to these landing pages, along with Google Search Console clicks / impressions / CTR / avg position data, I believe it would be even more valuable. Yet this isn't entirely necessary, and could be a v2.