With how the ending played out for Dying Light TB, with Crane and Aiden teaming up, the GRE's return, possible new infected ideas thanks to the Baron boss fight. I'm curious as to how the next game will play out, assuming there will be another due to the cliffhanger. DLTB did lay out a large foundation for a future game after all. I'm not sure what TL has in store or what ideas they have. Hell I doubt they are thinking of the next game right now considering DLTB hasn't even been out for a week yet. Who knows what will be in store.
However I do have a few personal ideas I think would be cool for the next addition for the franchise.
●As I mentioned, DLTB has laid out a foundation for a future game, so personally, I believe the map should follow the same core elements as DLTB's. However for a breath of fresh air, I believe the environment should fit a more winter tundra like setting. A cold environment would be something interesting and unique for the player to explore as none of the previous installments covered such topic before. Just like DLTB, the cold environment would have effects on gameplay, like whether for example, occasionally dark clouds take up the sky, or storms blow in. In the case of snow storms, the player would get slowed down, degraded range of vision, and would have to seek shelter for warmth, certain gear and clothing can help negate this however.
●The GRE would have to play a large role, and hold pressure over the map, they could actively send out patrols, search for the player via helicopter, etc. Ever since their appearance in TB, they should be seen as the biggest threat by far. Throughout the game their should be these facilities that the play can raid while fighting against soldiers. Active sabotaging their efforts. They could also hold control of safe house, forcing the player to engage in CQC. The facilities I mentioned earlier should have exclusive gear, like heavy weapons, military medkits, clothing, and maybe night vision goggles.