Hey Mike, everything you mentioned is already possible with the current version.
Simply go to the Analysis, switch to columns and set the timespan to "this month", then You can scroll through your past months and roughly see your total time per day by looging at the y-axis.
If you want to see your (accurate) total per day, switch to the tags filter and just select the standard working hours-tag while in the analysis.
Hope I could help you
also, check out the FAQs, especially the Tags