What if invalid events are stored on chain

[Stezido]

What if events with invalid format are stored on chain. I know this shouldn't happen, since all updates should be done via Trubudget's api. What if an organization publish an event directly even not intentional via multichain client.
Then apis connected to the chain cannot read this event anymore, currently an api would break because the event sourcing exits with codee 500.
Wouldn't it be better to ignore these events and the api builds the state from events it knows only?