I read somewhere once that you can use a certain patch to make it so the map generator doesn't generate slow roads. Maybe someone knows where to get this patch, because playing on slow roads is pure torture (I think I'm not the only one who dislikes them). Sometimes I even spend my rest just because I have no desire to crawl across the map like a turtle, which slows down development and consequently increases game time (not significantly, but still).
Doing this is entirely possible; in TE, Wic implemented something similar long ago, and they play without slow roads, obelisks, tents, cartographers, and healfords (also, there is a version by Wic where crypts and magic gardens were added to the Barbarian, Tower, and underground resps). To achieve this in TE, you just need to drop a small file created by Wic into the Data folder within the Heroes directory... (you can download this file at Heroes.by)
I just called Wicy—he says he could easily create something similar for SoD as well..
Wic (01:08 PM) :
list of replacements for TE
0023E5B0: 4B 41
0023E5B4: 4B 41
0023E5B8: 4B 41
0023E5BC: 4B 41
0025FFAC: 64 67
0025FFAD: 69 72
0025FFAE: 72 61
0025FFAF: 74 76
Wic (01:09 PM) :
for SoD the replacements are the same, only the addresses are slightly different