To be fair, the original campaign was timed as well, the timer just existed in the form of passive pressure via panic. Even Long War had a timer on it.MarsAtlas said:The timed campaign, for a few reasons. It could be wildly imbalanced. The other reason is that one of my favourite things to do in XCOM was to grind and drag it out, seeing how far as I could take myself.
I do hope there are marathon/long game options though. I enjoy sinking hundreds of hours into XCOM, and wouldn't want a too-quick campaign.