Since I've been tinkering with Five Leagues lately and running my mouth on social media about publishers not updating their games, I thought I'd be fair and give a run-down of what is actually involved in updating a game rule.
First, you gotta write and test the new rule of course.
If we're updating an existing game, that probably isn't too bad since you know what was wrong or missing and you may have already tried the new option.
Second, we gotta replace the old rule with the new one.
Copy paste right?
Third, we gotta check to see if the old rule is referenced anywhere else in the rules. If so, we gotta go back and fix those.
Fourth, we gotta check any game examples and update those.
Fifth, we gotta make sure we didn't break anything. After all, some game rules feed into each other. So back and check every related feature.
Sixth, does your game have points values? Purchase costs? Other balancing shenanigans? Did you just change the effectiveness of something in the game? Time to evaluate that again.
Don't forget that changing one thing can cause a cascade effect in the system.
Does the new rule make troop transports weaker? Well, now all transport vehicles AND the grunts they carry might be over-valued.
Seventh, is the new rule longer? If so, you might just have screwed up the page it's on.
Know how games always have like 2 lines of a paragraph awkwardly hanging off the next page?
Yeah, that looks wretched so let's avoid that.
Lastly... did you push every thing out one page? Your table of contents is now messed up and needs fixing.
Did you write one of the 3 games ever released in the history of nerds that has a table of contents? That's also broken now.
So yeah, updating or replacing a rule can be a ton of work.
But it's still better than keeping known errors around for years in my opinion.