Interesting subject. Umm…
Judging by the somewhat enclosed life-style of the Incredible family after exile from the outside world, things predictably became rather tight. Budget restrictions probably became one of the first major problems for the supers, especially since they had to raise three kids…with super powers attached as an added bonus. Most of their outside assistance more than likely came from Rick Dicker, an old family friend. It’s obvious that they had to relocate quite a few times as well, as Mr. Dicker soon became quite tired of it, as shown in the film.
Then, there was the problem of keeping their powers under control while in public/out in the open. Bob, obviously, had the hardest time of it, blowing his (and his family’s) cover more than once; hence, relocation after relocation. Helen probably had just as difficult of a time with it, and maybe even more so since she was responsible for her children and their powers.
As for the kids:
Well, I imagine Violet probably had a few more anxiety bursts in her lifetime than we saw in the movie, especially as she neared adolescence. However, she soon learned to control her powers to an certain extent: she would use them in public, though sparingly…and only when “necessary”. Dash, on the other hand, used his abilities
recklessly. Which, of course, was expected of him, him being a young boy with nothing else better to do. Besides, what kid that age could contain his enthusiam for doing something that every eight year old boy would dream of doing?
Then, there is Jack-Jack. His powers, previously unknown to the Parr family, are probably more dangerous than all the Parr’s powers combined. What is really scary about this is that he is in control of his powers completely; none of his other family members could tell him to emit or contract his powers whenever necessary. So, in essence, Jack-Jack – at least for the time being – is a bomb just waiting to be lit.
Combing all of these problems together – budget, safety/power restrictions, and children – and those fifteen years sure seem long. Personally, I don’t know how they handled it. If my family every came under that type of pressure…we would probably explode. 
But, as always, it’s these type of subjects that are the most fun to discuss. Nice topic, PixarVixen!! Sorry for my long ranting on the subject… 
Like you said about E, these topics were covered in the film, but only enough to tell the story.I wanna know what you guys think happened that we 
