I've been keeping tabs on this game since it was announced, and everything I've seen about it so far seems promising. It's clearly xcom-inspired, they've confirmed permadeath roster management, and they seem to be hinting at the difficulty.
Why my optimism is cautious:
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Star Wars games are some of the most hit-or-miss games out there. Sometimes they're amazing, other times they're incredibly mediocre.
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We don't know much about replayability. XCOM is extremely replayable because the generated maps, missions, enemy placement, etc. can make each run feel unique. If Zero Company's missions are too story-driven and linear, I worry that I'll bounce off of it.
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While they've hinted at the difficulty, I really hope they're not afraid to push the player (in whatever the challenge mode is). Many games phone-in higher difficulty modes by just tweaking health/damage sliders, unlike in XCOM, where they even brought in a dedicated director to make sure Legendary felt right.
In 40K defense. It's because they are designed by so many different Devs with minimal input from Games Workshop.
I remember hearing that games workshop did an opera Winfrey with the 40K lisenses to anyone who wanted to use it and a lot did fall flat but thinks like Vermintide and Total Warhammer were the standouts.
I think that's the case with LucasArts too. They just hold the IP (or I suppose Disney now?) and then license it out to various external dev teams. Some do a great job, others don't.