This is a stage pack that I pretty much just made for myself, but hopefully someone else finds it useful. It replaces a little more than half of the default Brawl stages with stages from P:M, Brawl-, and a couple others (including a few from Smash Bros. fangames.) I decided to keep the stages that were kept the same in both Brawl- and P:M, and replace the others - this worked out well for the number of stages I had available to replace them.
And it doesn't require ANY codes to work - although there's an optional Custom SSS code, which sorts the stage select screen into "stages I put in" and "stages that were already there," as seen below:
There is an RSBE01.gct in there already, but it just has the Custom SSS, the file patch code, and a couple other things (like unlimited camera), so you can just use your own.
This pack can co-exist with my Classic Expansion Pack too, and I included a common5.pac, etc. for that purpose. In this case, you would just use the Classic Expansion Pack RSBE01.gct.
Download: Afterbrawl 1.0.exe - 90 MBView README / Stage List