If she really celebrated her whole career from the beginning until her 25th Anniversary would be awesome.
It would be amazing if she made her concert like chapters of her releases. 1 or 2 songs from every album with the order of release date.
something like show opening with 2 songs from A Song for ××, song or two from LOVEppears, song or two from Duty and so on.. and if she would sing like one popular song and one gem would be amazing
the themes and costumes could be something from the era of the release she performs. like something 1999s for ASf×× and LOVEppears, something from 2000 for Duty etc
1. A Song for ××
2. Trust
3. monochrome
4. P.S 2
3. SURREAL
4. girlish etc
other tour idea that would be awesome is something Gaga did for Vegas. every other night would be party and really strong performances and every other could be very chilled out stage with her singing something with just a guitar or piano, soft ballads and acapella versions just her and fans together in smaller venues
she could be wearing something like when she was singing Life on TV back in 2011
I don't have any wishes for release but if she did something, I hope it's something strong like Mirrorcle World and Tell All. They are my 2 favourite songs from her