Hi Rafael,
Using CR's category stuff should be fine if the package is CR based. But packages that does is not CR based will either have become CR based to have this category feature. Or roll your own category package or use Timo's code. Timo's code may eliminate the need for you do it your own category package. I think putting categories in a acs object level is good. Also RHEA/CCM has moved to this direction. The category service is on the acs object level already.
I am still very very early in the stage of this project. All I am doing is to gather potential useful packages. If the project will not use CR (even though I like using it), Timo's package is one of my alternative.
Timo,
What will happen to cr_keywords when your package is officially in? Will it stay? I think they are still different, but similar too. I am also thinking of the option to just use the CR keywords and later upgrade when 4.7/5.0 comes out.
