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Its as arbitrary as the 13 weeks were or the 2 years before that.
If you want 1 week make a proposal and ask. If you want 50 weeks do the same.
4 weeks has been made clear as the point most sides are closest to.
Those that want shorter times will be happy with at least 4 weeks and will vote for it.
Those that want to stay at 13 or more will vote against.

Its fairly simple.

Yes, but 13 weeks is just a current, temporary consensus, and I don't say I'm in favor of this particular one.

Again, it's based just on some dualistic bullshit. How about option allowing shortening or lenghtening powerdown period in the real time with the votes of community.

It's unbelievable, that with all possibilities available we are in this political-like shitty discussion...

How about something else. How about 2 weeks. How about 18 weeks? How about rewarding long term holders.
How about how about?

We can go on and on. How about vote for this, vote against this or dont vote. We can go from there.

Going forward just for the sake of moving on is no different than escaping. We are getting dirty in politics here. I don't see any good for the community in this.