Even in games like XCom and XCom 2, it starts you at 4, but MAN I hated that. One of the first things I did was increase unit size to 6. Huge difference between 4 and 6 in keeping the game moving forward. 2 people die? That's not a major loss with 6. Even 1 PC getting taken out is huge with party of 4. Drives me nuts.
