Thanks, There is something to say for that as well.
Contra and other bullet hell games are based mostly on dexterity.
We are in that category as well but in a less hardcore extend.
Making it more difficult can be a choice as it becomes a challenge on its own to spot them.
Except it was not a choice. Rather a coincidence.
On the other hand i have just no trouble at all spotting them.
But who am i?
I'm the guy that played it a thousand times.
I'm a bit trained now and not representative for the average player anymore.
The jury is still out.