Advanced Excel Sheet Creation

I need an excel sheet designed with advanced functionalities. Unfortunately, I am unable to pinpoint exact features at this time, but as we progress, we'll identify what specifically is needed. Some functionalities might include a data entry form, automated calculations, and conditional formatting.

Ideal Skills:
- Intermediate level expertise in Excel.
- Ability and creativity to suggest functionalities and features for the sheet.
- Knowledge of data entry, formulas, functions and conditional formatting.

Please include in your application:
- A brief summary of your experience with Excel.
- Any similar projects you've worked on, if applicable.
- Suggestions for possible features for the sheet, based on your experience.