As a few others have said, the current language is suitable for the original intended purpose, although a better way of managing if..then..else situations would be appreciated.

If anything, I'd take away some of the non-core mathematical procedures and functions (ie: cell prettifiers) so that people stop using spreadsheets for such diverse purposes as project management (GANTT in spereadsheet columns - ugh!), tabular text reports that should be done in a word processor and anything else where another app would be more suitable.