An intresting discussion so far and I simply could not resist the oppurtunity to add my own thoughts to (as limited as they are sometimes
.
My own experience in the game (lately conducted almost exclusively on a 3 computer lan with a couple friends on a huge map) is that the attacker risks significant exposure during his attack run to defender counter strikes. To use a few examples from my last game where I am playing the hive on the mother of all continents (it wraps around the entire world and this was on a 50-70 map). One of my neighbors was a Computer Sparta and while she never really seriously threatened me due to my advantages in production, her being only a AI and my extensive road/river network which allowed me to rapidly move impact rovers within my boarders.
However when I shifted from defense to attack I became incredibly exposed and my attack forces were frequently hit in the flanks by spartan artillery pieces hidden in the extensive fungus between us (this was before I had time to research artillery of my own and I had limited to no armor research as well).
Add in as well a rather obscene number of rocky squares as well which both slowed my attacks and which made perfect perching ground for Spartan infantry units with synthmetal. Which forced me to either detour around them (with no gauruntee that I could considering the lack of real maneuver room with my rovers) or attempt to punch through them. Which would frequently result in a dead or crippled rover.
I know I should have made more extensive use of probe teams in that war but my economy at the time was weak enough that purchasing Spartan Units or cities was questionable during the first campaign. And I did make more use of them during the second war as my economy had matured between conflicts.
Sparta eventually lost the first war of course due to its handicap in leadership, but I was forced to accept only a limited peace due to the difficulties experienced above and a real concern that my real opponent a human controlled Drones would take the oppurtunity the oppurtunity of my distraction to continue to expand his lead in internal infrastructure build ups while mine went into the construction of many ultimately dead rovers.
That war cost probably cost me both cyborg factory and areospace academy due to the slow down of my infrastructure compared to his. It also occupied my formers for years afterwards trying to connect up my new widely spaced conquered cities with the rest of the empire and their general lack of good terrain around them tied up the formers for yet more years as they built forests, boreholes, and condensors.
As vel said a drawn out draining war as opposed to a short sharp victorious blitzkrieg leaves you exposed to both human and computer predators (though one of those two is only of a marginal threat, can you guess which one
. It can also leave you with only minimal gain that even when the peace treaty is signed it will continue to drain your empires limited resources for years afterwards perhaps distracting you from long term goals due to short term nesscesity.