You may not like Excel but most people who "NEED A QUICK ANALYSIS FOR YOUR BUSINESS" (to quote your copy from
https://www.jigdev.com) rely on it.
I think you have a solution in search of problem.
Showing it to more people is not the answer. Adding features only helps when you have someone who has a clear point of dissatisfaction with Excel.
Who is so dissatisfied with Excel that they will take the time to install and learn a new tool.
Excel has a lot of debugging checks built in to catch mistakes and if they make a mistake in an Excel sheet they can ask many people to double check their work.
If they are the only Jig user in the firm they are completely on their own.