R1C1 reference style can be very useful.
You can write a formula to sum from row 2 to the row above with an R1C1 formula
like:
=sum(r2c:r[-1]c)
It would be a pain to toggle the setting, write the formula, then toggle the
setting, though. But if you're writing a macro that does the same thing, the
code is easier:
dim myCell as range
set mycell = somevariablerangehere
mycell.formular1c1 = "=sum(r2c:r[-1]c)"
And if you're looking for inconsistent formulas, you can toggle this setting
(and widen the columns), show formulas, and almost use the naked eye to find any
formulas that don't belong.
(or use code to look at .formular1c1 to see if it matches the one above.)