It can make you post endlessly about getting the Chord Sequencer back.....!
It can make you sound like a 'live band' rather than a machine....
It can give you a hernia (but your over 45 lb. grandkids could do that, too!)....
It can provoke negative reactions from people who probably haven't played one since OS1 (if at all!).....
It can make you taller, more attractive to women, and clear up your acne....
(OK, that last one was an exaggeration!)
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An arranger is just a tool. What matters is what you build with it..!