I've been watching this for some time looking to jump back in - but TADF won't be able to get that service contract imo - Tac Air took their money, got a nice plane, and I'm sure Korybut and gang will reap the benefits somehow.
My own opinion - the floor definitely has not been reached - and TADF will continue to suffer slowly. That last PR was to keep all the sheep waiting, but offered no real substance - Ratso was piloting the plane as a getaway transport imo.
Go with the tide, just make sure you don't get caught in the undertow!