I've also done calculations, and a full-size map of the entire castle would be 15104 x 7936 pixels in size! Which is, unfortunately, much too big for my computer to handle with only 512 MB of memory. I guess a full map will have to be done by someone else once I'm finished with this.
That's what I mentionned earlier, and I don't plan on making it one pixel bigger than absolutely needed.
Also, after extensively discussing the issue with Revned on AIM, I've given more thought to the possibility of filling all the empty spaces on the map. The horizontal gaps will be easy for the most part, merely requiring extending outgoing corridors by 8 pixels. It's the vertical gaps which worry me. Most of them are 48 pixels in height, and a few might be even taller considering that to align some corridors I'd have to move some portions of the map thus creating in some places gaps 96 pixels high. Creating vertical connections like that would require adding platforms which don't exist just so that people don't get the idea that the passages are too long for the player to move up and own through them.
I'll try posting a few attempts soon to get the discussion rolling.
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"With the first link, the chain is forged. The first speech censored, the first thought forbidden, the first freedom denied, chains us all irrevocably." [...] The first time any man's freedom is trodden on, we're all damaged. - Captain Jean-Luc Picard
B*tch, meet reality. Reality, meet b*tch. - Me