Using asterisk * at the end of field name

I have certain fields that are critical to formulas and reporting within all the tables in the App. I want to tag them so I know these are the ones I need to watch out for if making any changes. Rather than add additional characters to already lengthy field names, I thought an asterisk at the end of each would help me spot these easily (versus looking at my field comments).

Is there any reason this is a bad idea or might pose problems later on? 
Thanks.

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Ruby Kapil
rubykapil@wi-finity.com
Wi-Finity, Inc
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