I know this is a costly and time consuming process, but I think if this investment was made, it would pay off for the studio and their future products. As much as I love their writing and style of adventure gameplay, there's one thing I feel needs a serious upgrade:
Telltale's game engine.
They are able to overcome issues of technical design through great art and character design, but doing projects as ambitious as TWD shows they need to up their tech. The slowdowns, stiff character movements and other perceptible tech limitations pull back what could be a totally immersive game. It's popped up in previous games, but TWD is kind of a breaking point for me. It's a fantastic game overall, but this is my main complaint.
Honestly, how great would it be to debut the next season of TWD with a brand new game engine capable of pushing their tech capabilities further? They could show even greater potential for emotional payoff, excellent set pieces and creative adventure gaming. With the revenue TWD is making them, they could have a chance to do this. It's not going to stop me from playing the games if they don't, but it would be a nice change.