50-100MB seems like a miniscule amount of space to warrant something like this.
My WinSxS folder alone is almost 10GB. If they wanted to save space, even a modest improvement in managing updates would yield space saving results orders of magnitude greater than this.
My WinSxS folder alone is almost 10GB. If they wanted to save space, even a modest improvement in managing updates would yield space saving results orders of magnitude greater than this.