No, I mean that, even though you can handle 99% of your BB code customization in the ACP, there is still the case of super duper fancy code that needs its own php coding to perform.
There is a couple hooks in the source code to easily add custom complex BB code.
Btw, is there a way to make a custom bb code that allows html. Sort of like [parsehtml]<something>[/parsehtml]
Oh and something to show bb code example without the need of [.code] such as [nobb][.b]bold example[./b][/nobb]
[code] doesn't always look that great, for example.
I actually tried the above with [code] originally and it made the post twice as long and it looked ugly. Plus it couldn't be used consistently because of the reason I give below:
It sometimes doesn't work (you can't show [code] inside [code])