Finally I have mentioned it before but SOU fits well with Volotea in the sense that it fits their business model of avoiding competition from the main LCC's and the 717 is quite a good fit for SOU from both a runway performance and physical dimensions point of view.
As much as I'd love to see this, believe me I've heard it from a credible source and it's not going to happen any time soon.
Also I've heard that there is also a small change this year to the SOU-PMI operations, the 717s flying for Thomson will no longer be NTE or BOD based and will instead be operated by the aircraft based at OVD, so it will now be OVD-PMI-SOU-PMI-OVD