In SP, ALL the NY gates were locked down until you had completed some mission or other. Dammit microsoft, give us teh source code!
i like the idea of one-time datapad keys - it will create a commodity that can be traded player-to-player, and will therefore be a *small* step towards the mythical unicorn that is a dynamic economy...
imo, the jumpholes shouldn't be locked down - realistically, there is nothing to lock down - there is no machine to prevent access