Change Report Format and retain history

For the new financial year I have been asked to revise the format to make it more meaning for Business managers. Currently we use a fairly basic format of

Total Revenue = Gross Profit

- Total Expenses 

Operating Profit

+Other Revenue

Other Expenses

= Net Profit / (Loss)

What I am being asked to prepare is 

Direct Revenue (from Operations)

Direct Costs

GROSS MARGIN

Indirect Revenue

Indirect Costs

OPERATING PROFIT / (LOSS)

Other Revenue

Other Exepnes

NET PROFIT / (LOSS)

This would mean moving some of the Total Expenses accounts to Direct Costs and also splitting some of the Total Revenue into Operating & Indirect

I can either do this by creating new accounts in the required areas or tryng to modify the Reporting BUT they key thing is to try & maintain history for analysis

Any thoughts on the best approach