I have a couple more ideas regarding All-Star mode. Firstly, as I said before, I want the setting changed to something more serene and peaceful - something more like Melee's park area than Brawl's cave.
However, as a feature of this stage, it changes seasons as you progress through All-Star mode. It starts in the summer season, which is pretty basic.
However, after completing the first round of fights, the season changes to autumn. Any trees in the background have leaves with shades of red, yellow, and orange. The ground is covered with a layer of fallen leaves.
As you progress further, the season changes to winter. Snow gently falls from the sky, covering nearly everything and turning the area into a winter wonderland.
For the absolute last and most challenging battle, the season changes to spring. Spring is similar to the summer season, but flowers are blooming everywhere and wind can be seen gently blowing across the area. This stage of the area's evolution would be meant to be the most beautiful.
To accompany this concept, the music can change over time, with more instruments parts added over time. It starts with a basic piano or something, but builds up with strings and perhaps a solo woodwind instrument. Then, perhaps bells as well as additional woodwinds and strings are added. Before the end, in the spring season, and before the final fight, the music has morphed to include a complete string and woodwind ensemble with minor percussion elements such as chimes, bells, and even snare drums.
In addition, as SSBFan suggested earlier, All-Star mode can include several set patterns in which you encounter enemies, but which pattern is used is random. Some ideas for patterns for encountering foes in All-Star mode:
- Date that the first game in the respective franchise was released
- Starting character to hidden; the starting characters are in a random order ,while the hidden characters appear in order based on how hard it was to unlock them
- Minor franchise characters to the major characters; starts with second-banana characters and minor franchises, moves on to moderately-important characters, and then end with the major characters and big franchises
- The generic order everyone seems to use in their personal rosters: starts with Mario and Mario sub-series characters, ends with the third-party characters
- A completely randomized order much like Melee's implementation of All-Star mode