After the 4th season ends and the show is put on hiatus, do you think that the people at Disney will make a DVD/Blu-Ray box set for each season? I hope they do. Also, do you think that they should add concept art, interviews, episode commentaries with the writers & some of the voice actors, and last but not least: outtakes (with the latter being animated, similar to the likes of A Bug's Life, Toy Story 2 & Monsters Inc.)? Here's an example of an outtake:
In "Jerk De Soleil", during the "E.V.I.L. B.O.Y.S." song, when Candace strikes her pose at the end, she accidentally breaks the microphone stand, then everyone but Candace start laughing, and she goes "What? What's so funny?", looking at the microphone stand and yelling "MOM! Tell Phineas & Ferb to replace the microphone stand!" in her normal voice. I know, it's not that funny when you think about it, but it's the best example I could do.