Only problem with that is, 200 years won't get us anywhere. When talking about generation ships traveling between stars, we're talking about 2000 years - anything that big would be far, far to massive to accelerate to any appreciable degree of C. Which then means that genetic drift becomes a serious issue. Never minding linguistic drift. What happens when the crew can no longer read their technical manuals or labels on the reactor?
Although, to be fair, insects as a source of protein would likely be the easiest way to go.
They continue to update them, just like how we don’t read 1066 manuals for steelmaking. Why wouldn’t they?