Geandily

I'm kind of in the same boat; Haven't played since around the game came out and I finished it on Classic Ironman... Game seemed kinda like it was "on rails" compared to the original X-COM. So I have two questions: #1 Should I buy that "slingshot" DLC? #2 Which mod do you guys think would get the closest to the original X-COM? Thanks so much! I'm really excited to try out some cool mods :)