Make one report type with ALL data sources and filters

The current reporting in Wrike is extremely limited and frustrating. Instead of choosing a report type, why can't we create a report with any of the data or filter sources we need? I need some elements from the "Task" report, and other elements from the "Timelog" report. The limitations seem arbitrary. Please take some cues from your competitors. We just came from Toggl, and I can filter to my heart's content and get exactly what I need. Please, please fix your reporting. 

In my particular instance, I need a report that shows the project (which is our "client"), the task that was completed, sub tasks, and time tracking, and whether or not the tasks were billable. Well, I can get everything except the billable field, which isn't available on a "Task" report. Why would this filter be left off that report? So I go the "Timelog" report. It has the billable, but is missing a ton of the other filters. 

I also need filters on subtasks, and I don't think this exist at all under any report. If a task has subtasks, I should be able to pull the entire task into a billing report based on the date the parent task was completed, or the subtasks should, at a minimum, still be associated with the parent task on the report. This is not the case. When I try to invoice, I'll see orphan subtasks, such as "proofreading" show up on the report with no reference their parent task. 

While Wrike is great as to actual tasks and workflow day to day, the reporting is WAY behind competitors and, I'm sorry, just completely awful. Please consider doing some recon on your competitors and make your reporting better. I've only listed a few issues here, but there's more, and I'm happy to share. You're biggest issue is limiting what filters and data sources are available on what reports. Please make every field available as a filter on all reports.