Matter of opinion. You have the people who agree and disagree.
I am not for/against it. But here is some pros and cons (I guess[somewhat opinionated])
Pros:
-Adds something new to the table, rather than a new server, or gamemode.. a little fun tid-bit
-Something people can choose to use, considering people were fine without them
-Can't really be abused, unless for exploits (which is why we have a nice thing known as admins and a lovely way to report players for exploit abuse)
aaaannnddd... some cons
Cons:
-Negative reception anytime it is brought back
-Adds something new to the table (not always a good thing)
-Sets up a new set of rules/exploits for people that we may have not found yet
Now, this is the part where I put my opinion at (like it matters)
They are okay. No need to complain, no need to whine when they disappear. It's like losing money you found off the ground. You find it, you like it, you may lose it, but it was never yours or was your responsibility. If Death chooses to put'em back, so what. His choice, not yours. All in all, it's just a messy thing to bring in. It's like friendly mode. Big ol' mess, people kept complaining (for good reason since it was bloody broken) and it never really worked out.