I'm not in the factory, but since one would imagine this would be transferred to the Codex too...I have a stake.
I absolutely disagree with this on every level. No, not because I have a power complex and need to stamp everything myself, but because it provides a second level of verification on a staff level.
We let factions nominate masters, but the RPJs still check them and approve it. 95% of the time I double stamp things, but occasionally I see something I want clarification on, or which might have been missed.
A double stamp also takes the final responsibility from the judges and puts it on staff, which I feel is actually good here. The judges are not staff, so if an admin stamps the sub they are officially verifying it for the whole board.
From a technical perspective too it would force an increase in the powers of the judges by allowing them further security permissions, and I don't think it markedly would speed up things. The factory and codex are optional, so if you submit something there, do it with the understanding it won't be instantly handled and move on accordingly.
Totally disagree with this proposal.