I don't agree that a system can be flawed, but I find there are flaws in some systems.
For example, in the original Traveler it was extremely hard to improve your character once it was generated.
In D&D 3e it was a flaw to make it too easy to multi-class. Because when it first came out there were players who going to have their character take one level in every single class there is.
And sometimes powers are written poorly.
Some game systems are very complicated or just rules heavy. I'm not sure if that is a flaw in and of itself. But as for myself I won't touch them except for adventure ideas.
For example, in the original Traveler it was extremely hard to improve your character once it was generated.
In D&D 3e it was a flaw to make it too easy to multi-class. Because when it first came out there were players who going to have their character take one level in every single class there is.
And sometimes powers are written poorly.
Some game systems are very complicated or just rules heavy. I'm not sure if that is a flaw in and of itself. But as for myself I won't touch them except for adventure ideas.