New post grace period

Very rough, sudden idea that I believe may have been discussed in scattered posts but I'll just mention it anyway.

#The Problem

Random/inappropriate downvoting killing a thread before it can get any traction whatsoever. The infamous '0' in the first 5 minutes of a post being up that tells you anyone looking at the 'hot' ordering will never see your post. Whether it's a victim of a downvote spree from the front page (another issue but we'll shelve that for now) or another forum goer with a grudge seeing an opportunity for some anonymous payback, a single downvote can kill a thread, while it takes several for a post to rise above the rest.

On the flipside, we also have to understand the point of a downvote, a way to express a negative opinion towards the overall use of a thread. In other words a way to say "this thread is a waste of time and others shouldn't be bothered to read it". When dealing wit the number of forum posts GD handles everyday this can be a godsend for sorting through the random, unnecessary, troll or incomprehensible posts that plague large communities like this.

So we need a solution that preserves the role of a downvote, but protects newer posts from that early "first blood" downvote.

#Solution

A certain length of time after posting (let's say, for now, a single hour) a post cannot be brought below a visibility score of 1. Downvotes are still recorded and brought into effect normally after the grace period, requiring no 'return trip' by anyone wanting to keep a post down, but allowing any good post to have equal chance with other recently added posts to accrue upvotes.

Thoughts?