Appreciate the work it will take and the effort that will be put in. From a purely personal perspective I will prefer having the points from which I will create lists on a spreadsheet merely designed for printing rather than running formulae.  In general though I think it's a good idea as it removes what some people is a potential barrier.

I'm currently trying the ODF/ODS format sheet as a problem surfaced earlier of different costs (25 and 30) coming up for Expendable chariots despite the attributes being the same.  I'll run a few different trials and saves to check that it wasn't a corrupted save (if that could have caused it).

Update to above: Seems the Expendables was a one off glitch which has not been able to be replicated with multiple saves and opening of fresh / old ODF sheets.