EMAS
That's a good point, but could be mitigated by having some leeway on both sides of the runway before the system started. I'm not an engineer, and there's probably many issues that need to be addressed before such a system can be deemed completely safe and not adding to the total risk. I am questioning, however, why it's not being looked into, and why it is so easy to dismiss right away.
I've seen what the lack of such a system (at the end of the runway in that case) can do, and with my own eyes, not through TV, photos etc. I've seen what it does to families, rescue workers etc., and believe you me, all you want when you've seen something like that, is to make sure it NEVER happens again.
Maybe EMAS isn't the answer, but it is worth looking into. Maybe it couldn't have saved this aircraft (based on information from press conference), but it could save the next one.