Given that Sins is in an obscure genre and is not a sequel, I think we should judge this game with conservative expectations...while the game may have problems, I still think we should be thankful for what we do have...after all, this is not Halo 3, a game with 2 sequels to build upon and a massive online community...
Many mods have been made that try to bring balance or more diversity...you have graphics mods, balance mods, mods that add new planets, conversion mods for various sci-fi universes, etc...while the original game may have serious problems, people love playing sins with mods...the game engine has immense potential and for a first release of its kind with two mico-expansions, I'd say Ironclad/Stardock did pretty damn good...
With that being said, however, I do believe that most of your (DesConnor) criticism is well warranted from a single player/campaign perspective...there is definitely a lot of room for improvement, though again I'd stressed that Sins has very little before it to build upon or learn from...
Though some elements of the game could be drastically improved, I do think the game still does have a lot of potential for good, solid MP games...and since those who are least content with the game seem to represent the crowd of multiplayers, I think there's where the focus of future efforts should lie...as far as I am concerned, sins SP is a lost cause, and even if it were improved, you are mostly addressing the SP crowd, the ones who seem most content with the game...
I think most of your points are worth implementing in, say, Sins 2...it really would be more interesting for Advent to start with desert planets and Vasari start from space (with say, a space egg or something)...also, it really does make more sense for TEC to have a weaker early game since they are allegedly unprepared for war...there are a lot of really good ideas that have been suggested on these forums, but ultimately I don't think we're going to see the vast majority of them in Sins via patches or other expansions...
Giving sins all the features we want to see is just not going to happen, no matter how good our ideas may be...however, we can still foster diversity and create balance with sins as is...this may not be good enough for some people who expect a lot more from a game like sins, but obviously there are still people who like sins despite being fully aware of its balance issues...patches, mods, and expansions that address balance are still very beneficial to the community even if it seems small and dying...
Silverion23, I would say that from a MP perspective, sins is in desperate need of balance...multiplayer is one of the most brutal things for a game designer to try and address because even the slightest imbalance will be exploited massively by human players...for a game to be balanced at the multiplayer level, it needs to be perfect...being close to perfection is okay for SP or for matches against an AI, but it will not suffice for competitive MP...
If you are serious about your balance mod, I'd highly recommend playing on ICO...you don't need to win all the time or be ungodly amazing in order to make a good balance mod, but I think the experience of playing against humans who are very good will help you immensely...
I would also note that diversity and balance are not exclusive...you can have factions that are very different but still very balanced...I really would not be concerned that attempts to balance the game will just make all the factions seem alike...multiple attempts at balance mods have been made, and while you can argue about how well they actually balanced sins, I don't think any of them decreased the diversity in the game...