It would be great to be able to report back on potential impressions easier e.g. a bubble like the one for actual impressions because you currently need to export to excel and add it all up.
Not sure how realistic this one is but some clients have also mentioned that native analytics (e.g. for Instagram) allow you to weight your actual impressions rather than Pulsar's algorithm of 11% so being able to customise this could be useful based on company KPIs.