Using Tokens with Subject Lines in A/B Testing

Why doesn't A/B Testing with Subject Lines allow user to select TOKENS?  How hard would it be for Marketo to add the three dots (...) next to subject line to make these more accessible.  Right now I have to KNOW the token and hand write it into subject line (prone to user error).  I ask this because I can increase response rates by 3x or more if it is personalized based-off company name, industry, title or other relevant data points.

Where do we go to vote on this?