This has been brought up before and while I originally advocated removing "no .pac" reports, I have since changed my mind as not everyone knows that you can make your own.
The thing is, most of these hacks that get reported for that are old, and even If the uploader is still around, they probably haven't updated the entry yet because you can make It yourself.
Most of those were fixed. There were a few that were legit reports though. Also, for your question, .pac files usually aren't needed, but for hacks like Bowser, Samus, Wario, etc. they are needed and should be provided.
Snoopy, when you update Stack Smash with Rosalina, be sure to include the Hydra in your update as well. I'll work on the shaders for the Hydra to see If I can fix the lighting problem, and get the reflection working on the set.