Alright, guys. I found it, finally! The code that allows two/three sets of all existing stage slots, via RSBE02, RSBE03, and '04. The code is in the GCT file (obviously), and it works by changing the SSS and stage data from one folder to another when holding X/y/R/B while changing stage roster pages. That maxes it out to the ironical number of 666 with three alternates per stage (calculated for PM, not vBrawl), but that's still so many more. 333 regular stage slots with three possible alternates each. Now, talk about "expansion."
As I was trying to say, rel-less ports with the ASL Tool's codes would be useful. Mostly to prevent crashes, but also with these kinds of problems.
That said, though, I think it makes sense to set a placeholder for a stage being problematic if it's necessary to use a half-buggy code. Did/does P:M have issues with that, too?
7.0 with STGEMBLEM_00_L.pac (AND STGEMBLEM.pac simultaneously) loads for me, but I'm also using just a texture mod for Castle Siege in that case. Strangely, then after trainsformations, 01_L and 02_L are vanilla (in-game), but 00 and just STGEMBLEM remain loaded here.
Not sure if that's a module problem, or the new code you got there.
Of course, _* would also fit with *+A on SSS if you go with this.
The ASL Tool supports all GC Buttons for alts, and even crazy things like L+R+B+A, although that sounds more like a wreck.. X(or y)+A sounds reasonable, though.
Understandable, although I've only ripped 3DS models, so I wouldn't know if it were the actual Wii-U model.
That said, I also believe that with module swapping on per-button, couldn't you also just add X/y/(D-Pad?)+A for Castle Siege only; thus cleaning up one more space, and making the hunt for statics of an already-existing stage easier?
EDIT: Not to mention, STGEMBLEM03 (or something) with the lava pit is close enough to "static," as it just rocks back and forth a little. I personally like that, and or people who want it motionless, it's easy to just replace that stage on it's own. I'd bet that people would either be all-out, or all-away from that stage's mechanism.
Does it work with GW_en, or is there a code to force the use of the GW file?
Also, Target Smash could easily have alternates of it's other stages, or other mode-exclusives, but then using blast-barrier fixes. If that becomes the case, I could easy make such.
The Smash 4 Final Destination is already merged to Z+A, so I'll assume you used what was it's slot, and say Peach's Castle Melee/64 could merge. "How to Play" could merge with Target Smash too, if you're still doing three alts on all STGCUSTOM. Also, Kongo Jungle Melee/64 could be merged.
In small request, if you can make room, I'd like to see a slot for the "Break the Targets" stage. Not a clone, but using the actual stage slot, as seen here*.
Also, any other of the miscellaneous stages, I feel like they could all have an additional page, but I've only seen one mod on the vault that adds pages, and it added a whole 'nother set of two.
If we could also add pages to this, I bet that one page being the miscellaneous Brawl/Melee (regularly) non-battle stages, then the fourth page could be SSE stages, or vice versa.
EDIT: In the least, I'd like to see STGTARGET (Stage ID 30) added in.
EDIT(2): ..and why aren't you using the normal Online Training Stage (2F), and then just making the no-items mod an optional addition through having or not having the STGONLINETRAINING.pac file? Especially with the L/R/Z+A going on, having it as a STGCUSTOM makes it more confusing.
On a personal note, I used Mewtwo2000's ASL Tool to add Z+A = Smash 4 variation to Battlefield and FD. Also, I feel that more STGCUSTOM stages should use L+A for an Omega alternate. I had made some small efforts on this, but more so I just swapped out Kalos Omega for Kalos normal, after having ported the REL.
I'd be interested in being a part of the development of future builds, although I'm not sure if it'd actually help much.
Of course, I can help with things along the lines of SSS or making Omega's. (As I said, the Kalos League stage Omega. I could port it to work over the palutena stcustomXX.rel, thus making another L+A= Omega, which I see too little of in my own opinion.)