While I fully understand the significance and how radar signatures work, I dont think they are used hardly at all in game yet. If there is evidence of players using radar signatures, please link it!
If you click on the "Calendar" tab at the top of the TEST forums webpage, you can get an idea of all the events we have planned. And as Thraesh mentioned, just ask one of us or post your questions in the #rock-raiders channel on the discord located under the STAR CITIZEN category!
We must be talking about different things here then. Buyback tokens are 1 per quarter of the year if using store credits. That's how its always been as far as I can remember.
I dont recall CIG revoking LTI from ships already bought with store credits....unless you are talking about buying ships today, then yes you have to buy warbond editions to get LTI.