The engine change is absolutely for the best. Torque worked but only after hacking what was intended to be an FPS engine and making a 3rd-person adventure game out of it. Also, the engine is no longer supported by its makers, so no updates, etc, have been coming out for it in years.
Unity is VASTLY better engine, and our tools are also vastly better. It's far more user-friendly as well--you don't need to know programming languages to do a lot of things in it, once the tools have been created and added. And, yes, much less buggy, and easier to fix if there are bugs.
As for staff: there has been staff working on TSL this whole time. However, that staff is still a volunteer-based staff, meaning they are working in their spare time, without pay, on the game. It's not the same team that works on Cognition, Moebius, MGX, etc. Meaning the progress, yes, is slower-going.
We haven't posted updates because the focus has been more on getting work done, and much of the progress that's happened hasn't been easy to 'show'--updates in programming are difficult to display. We are working now on both the game and on crafting updates, but all of that requires planning as well.
In conclusion--we are working on it, and on posts and updates for it, and we know people are frustrated. We want to finish the game as much as anyone--moreso, really! We also want to do it well, not just throw something together that's only half-finished and buggy. The team working on it is not full-time and they are volunteering their time to make this game. It will come out, but please don't forget that.