In my opinion ( and that of my fellow players ) TB are a very, very good upgrade to x wing. At first it was viewed with suspicious eyes...catch the enemy with a TB and... Boost???
After many games they have proven that they are ok. Not.overpowed but change the way you must fight. Many PS 3 Interceptors in my hands ended over a rock, laughts and very tricky. In a IG 88 simply SUPERB, Ions + TB are tons of fun. A weapon that is really.dual purpose. This turn pull the enemy to aid your wingmen. Next turn, push the target to help your friends.
I am so sorry that the G-1a is only mediocre. Perhaps I am an Heretic, but we equip the Mist Hunter limited title on every G-1a and it works OK.
So, if you have no experience with this, proxy and give it a try.