Hi
As I see from your specifications, you would need sales analysis (by region, by sales person, and by product) if you are into product business. If you are from service industry, you would have several consultants / specialists where sales data would be required as well as time sheets to ensure full utilization of resources (and avoid under-absorption of costs).
Besides the sales data, you would need Accounts Receivable, Payables, and Profitability analysis. Since a typical manager would not indulge in data entry, the Excel sheets (or the module) would be friendly to use for an administrative or accounting clerk.
For future requirements, you would need to performance controlling (matching your actual, budgets, and forecasts). This can be catered through another requirement of Budget module which again, should be a user-friendly module.
Thank you,
Iqbal