Yeah, I support this. An article on Missing the Timing would be nice, especially if it goes into detail about the difference between "When" and "If", as well as their mandatory version.
We also need an article for Damage Step, since I still see some people being confused about what can and cannot be activated there.
Any card that affects ATK and DEF can be activated in the damage step.
However, only Crane can be activated in damage calculation step, though.
Basically, the battle phase flow looks something like this:
Battle Phase Start Step>(declare attack)>Battle Step>Damage Step>Damage Calculation>Battle Phase End Step.
By "any card" I mean any trap set on the previous turn as well as any quick-play spell card with the said effect.
Normal spell cards do not fall in this category.
Also, I forgot to mention that you can also activate cards that specifically say they can be activated in Damage Step (e.g. Michizure).
I did make a Guide on Timing, it's called "How to Counter Yubel". There's an entire section on why certain cards are not able to activate their effects in certain situations.