It'd be nice to maintain references across worksheets when importing spreadsheets. I haven't found a convenient way to do mass 'find & replace' type operations, so updating these broken links to other worksheets is quite tedious.

I think this would be easier with #2193653: Allow import into spreadsheet fields, since the "Sheet 1"!A1 syntax is only referencing other fields attached to the entity being created. Actually, I just saw that you can reference other sheetnodes by node title using identical syntax... So this point might be moot.