Group like items in the Calendar on a specific day

We have numerous items (10s to 100s) with the same Planned Completion dates, but they bog down the calendar view. Is it possible to group on the day based on specific criteria? For instance, if I had 15 with the same Planned Completion Date and they are all a specific project custom form field, can I group and just have a single entry on the date saying something like "Specific Field (15)"?

This would be wildly helpful for those of us with fewer planned completion dates and a ton more projects.