Gatehouse also recently purchased the Akron Beacon Journal, so along with their other Northeast Ohio papers (Canton, Alliance, Wooster, Kent-Ravenna and the associated weeklies) they have a very strong foothold in Ohio when combined with the Dispatch. They could easily pool all of their resources to cover the Mahoning Valley since they upped their sharing of content.
Most likely, the T-C will expand their distribution to Mahoning County and become a full-market paper, maybe by acquiring the rights to the Vindicator name.
They may have been able to sell the Vindicator if they kept up with the times a little more. It was my understanding that the presses were only modernized less than a decade ago, while other newspapers had made the same move 10 or so years prior.
Now with WFMJ, the target on their back just grew exponentially, since they will no longer have a daily newspaper tied to them. I'll bet the Wolfe Family said the same thing when they sold off the Dispatch, only to sell their TV stations to Tegna a few years later...