There's one major problem with the Iconians: They're nearly impossible to play with the "No Tech Trading" option.
I disagree. And the same can be said of the Thalans. I actually think, on balance, the Thalans (no basic production buildings of either kind, no farms ever, only start out able to build embassies) "need" tech trading more than any other race. In any case, if the difficulty is low enough, you can win with any race without tech trading (I can win with all TA races on Maso... its just obscene and suicidal where things start to fall apart).
3. Their moral building costs 5bc per turn. You need to build this to keep your folks happy, but it will ruin you over time.
IME the upkeep has the opposite effect. It will ruin you right away, but over time doesn't matter so much because as the game progresses you make more and more money. I guess it depends what tax rate you run at (I prefer 69%-79%) and the size of your populations. It also depends on if you want to build ANY morale buildings anyway because...
because they lack advanced forms of government.
And this is almost an advantage in disguise really. This means you never need to worry about voting, and really, after the first few turns where you are trying to build populations you never need an approval above 40% all game. You can keep the tax sliders much higher in an empire. Imperial forms of government have their charms...
The Iconians, i guess from a design standpoint, were supposed to have cheap, easily researched and powerful buildings early on but without the ability to develop them any furthur. Although it makes sense since they inherited precursor tech, it doesn't seem to work as well from a gameplay standpoint.
Depends on your playstyle. Iconians are blitz masters now. Able to get out of the gate fast. They have no need to spend time on infrastructure techs or diplomacy techs, and their economy tech line can be finished fast. So what to do with all of that research? The only thing left to focus on is combat techs...
Good production and research are useless without the money to use it with. When things get to mid-late game, those early advantages are lost when other races catch up and even surpass whatever the Iconians can build.
But if you can strike early there is no need to worry about what other races could do if you gave them time. Strike early, and strike hard. If you do this you get more planets which gets you more people which gets you the money to run all of that production which lets you hit more planets... etc. etc.
As for soldiering, invading planets will destroy almost everything on one.
This, and the above mentioned lack of good soldiering tech is IMO their biggest problem. The good news is with all that invading you have a chance of picking up invading tech yourself.
Their racial abilities also suck big time. The espionage bonus seems to be completely out of the blue, its not bad, just random in my opinion.
I disagree a little here. Espionage is the worst ability in the game because it is a penalty. You get no bonus from the espionage ability, you are just forced to spend more money without control over it (I like to micro manage). When money, at least in theory, is a problem anyway.... well having an ability that COSTS you money is the worst thing possible.
The super ability is one of the weakest ones because it is so random, and I rarely build colonizers even on very large maps. Its about building transports.
The new Iconians are growing on me because I love to blitz, and the Iconians seem to be shaping up to be blitz masters. In fact, given their tech tree its their only real strategy. The new tech trees do a great job of giving each race one or two really good, unique ways to attack the galaxy. Looking for an early game colony rush on an all industry strategy? Look no further than the Drengin that can produce loads of industry easily. Looking for that quick technology win? Altarians. Are you more comfortable with rock-hard planets and high defense? Arceans it is! Etc.
Iconians have nothing to research but military and economy techs right from the get go. The only real question with them is do you research planetary invasion first and then do the econ line, or the econ line and then planetary invasion. From there, go for some military/hull techs and try and knock everyone out before they've gotten out of the gate. With nothing really good anywhere else in the tree, that sort of play style is kind of forced on you.
The soldiering bonuses are the only detriment to playing that way, but early on populations are small, and eventually you will probably pick up a few soldiering techs while invading. That is just the optimal play style of the new Iconians. They have to be an aggressive dominating (good) empire from day one. If you don't prefer to play that kind of game, there are a dozen other races with their own playstyles.
Just my take after a half-dozen games.
~ Wyndstar