Definitely do a Classic Ironman run Prova. First game out of the box on launch day I started a Classic game because I played the crap out of the previous 3 turn based XCOMs so I thought I was past Normal, lost all but 1 guy on the first mission 2 turns in to some pretty iffy shots and restarted on Normal to try to ease back into things. Normal is fun for picking up the basics of the new mechanics but the tactical is just way to easy. Didn't lose 1 guy the entire game and got stonewalled by an end base glith that prevented any doors from opening after I'd killed all of the aliens in the third to last room. Restarted again on Classic Ironman and was right back to old school XCOM mindset. Lost some guys, lost some really important guys but struggled through it, figured out the satellite game and kept most of my countries happy long enough to build up a crazy good squad. Sat around for 6 months trying to find a battleship to shoot down at which time I'd lucked into 6 psychic troops who I sent on every mission and were all max rank by the Classic alien base mission which is just faceroll easy with 6 maxed psionics with max tech gear. Classic definitely feels like the balanced difficulty for the game. Want to check out the new DLC but unsure if it's enough content to warrant an entire playthrough to see (not that it takes a whole playthrough to see the new things just that I will play this game all of the way through again if I start back up). Waiting for Cydonia DLC.
Really happy that Firaxis pulled this one out, especially after how horrible the Jagged Alliance 2 remake was under the pretenses that turn based strategy can't sell.