Thanks for the response.
1. Online spreadsheet? -> No (Excel file)
2. Spreadsheet access now by means of sending copies over email back and forth, no revision control of entered data
3. Spreadsheet is used for it easy to catch data per row or column, basically it is used as a survey document to capture tech data. No real spreadsheet functionality is used
4. Painpoint: Spreadsheet is old school, no jazzy and dull to use. Als export via API or through JSON etc is more appropriate. Spreadsheet now is about 26 tabs, hard to manage
5. See 4. Number inventories is increasing and a spreadsheet today is not the right tool
Ideally the 'survey' is a technical questionair and inventory list of data, passwords, IP numbers, names, emails etc etc
There is me and a team of co-workers (team A) and a 'client' with a number of team members (Team

. Both team A and B should have free access to the survey and adjust entered data along the way, so basically never close. Every team B data should be secure and ONLY accessible by Team A and Team B. Team B can work on different suveys thus working with multiple team B's each with their own set of data.
Obviously we can analyze the survey data much better then a spreadsheet.
Thanks for you consideration!