The future in Marvel is not as set in stone as some believe, especially since many of these characters cannot age, and their status quo's usually remain the same. Plus, new writers have new visions for alternate futures, which are usually safe places to slaughter characters. Hence, why the many "alternate realities". The ALTERNATE DIMENSIONS Handbook from last year has a good list of a bunch of them, including Marvel Knights 2099 (which is not the same as the 2099 where Ravage and Spider-Man 2099 come from). The "Days of Future Past" storyline was claimed to be a "de-facto" future for a while before the events supposedly altered it and left it an "alternate dimension".
Plus, simply knowing of the future can help prevent it, or alter it, as Reed said in the League of Losers arc in MTU. Now that Gert KNOWS she is destined for greatness, will she still be able to reach it, or could she slack a little now that she is "expecting" it. Same for Victor. Now that he knows of Ultron's plans for him becoming "Victorious", will they come to pass? And if so, likely not the same way.
In terms of the Runaways, after Future Gert arrived in the first issue of the 2nd volume (or "season" if you want to be "hip" like Marvel), she not only hinted of Karolina's departure from the team, but seemed to allude that at some point Chase likely dies before his time ("Sweet Chase, I never got to tell you how much I --"). Which'd suck because he's probably my favorite Runaway. He's a rariety in comics; the "normal guy" on a team who actually IS normal, as in NOT a martial artist, NOT a genius, NOT a guy in armor, etc. Of course he has that Frog-Hopper thing under his command and lord knows what secrets it still has.
Some of the Young Avengers have also been just as distrustful of "adults" as the Runaways; Patriot is no fanboy of Captain America, and the team has stood against the Avengers when they've had to (like when they wanted to return Iron Lad to Kang). I don't think their new speedster guy will knowtow to adults, either. The Runaways would probably not be too keen on the spandex and codenames though. That stuff reminds them of Alex.