The devs have said the game will warn you ahead of time before you reach the point of no return
Isn't going to make it svck any less when you have hauled your character all the way there through hardcoe and want some quality ass kicking time once the story is done.
Some off us aren't interested in created 200 different characters and RPing the game more different ways than there are days in the week.
Myself and plenty others I imagine, can be quite decisive and have the idea of their character formed in their head and that one character will see them through the story and beyond (when allowed) and will use this character forever more.
The first DLC is going to be another Broken Steel styled rip off to allow you continuance of your game, don't get me wrong as I didn't see it as a rip off as such and enjoyed it but I would have bought it even if my character didn't die at the end of FO3. The thing that pissed me off the most is that I had to wait till it was out as there was no way I was finishing the storyline until I could continue past the original end.
Did Obsidian not learn from Beth's mistake or did some marketing moron realise that after the Broken Steel DLC's success decide it was time to milk us like cows?