Ups...sorry about the multiple post.. On my end I kept getting some error and my post didn't show up, so I thought it didn't come trough..guess I was wrong.
Now to adress the issues:
1.
I don't see what's wrong with tactical combat. It's a FUN and STRATEGIC thing. Jsut becouse you (or some others) don't want it, doesn't make protesting against a good move. Give people options - those who want tactial combat may use it, those that don't want can just autocalc. This way you are catering to a greater group of players. More optiones ALLWAYS = better

And since ypou only get several basic tactics, even the AI cna use them with good efectivnes.
Of course, the effectivnes would depend on ship type, his tactic and hte enemy ship type and it's tactic.
Example?
The enemy has a asault ship (long range artillery) and it's orders are "long range attack" - basicly to keep it's distance and fire. Depending on what ship type you have you have different options.
If you have light ships your best bet would be to strafe with them. A Battleship might have enough shields and armor for a even a frontal assault, alltough circling it may be better. Alternativly, if you have fighters, evading and flanking might be best.
2.
Ok..you're alergic to anything tactical (or is it jsut tactical combat?). Why do you then play a strategy game? Should it be all about STRATEGY/TATICS?
3.
engine casings? Why? Maby becouse I don't want my engines to glow like neon lamps from ALL sides...
4.
It does make sense that you have to do some market research before trading and that you have to be on good terms with the aliens, but you have the MASSIVE colony ship, which can transport people AND materials - yet you have to reearch trough half the research tree before you can make a ship that transports just one of those things? Makes NO sense to me.. You get freighters and troop transports too late in the game. They should be available sooner.
And after universal translators are researhed you should be able to explain the concept of alliance or trade to a sentient species very easily....
5.
While fighter speeds can be debatable, smaller ships DO acelerate faster than bigger ships...the question is - how long does it take them to reach that top speed? And in a space battle, with lots of doging and changing of your direction, better acceleration IS important, as it means changing your vector sooner, thus avoid getting hit...
As for multipplying - ti's far from pointles, as the weapons are multplied as well. What this makes possible is greater diversity in weapons and protecction. It doesn't make it any easier to slip up...
6.
Research alliance would mean sharing of Researhc Points - not directing the allay research. Basicly, both sides would get a boost in their research..that could be even biiger IF you both research the same tech...
Oh..and don't tell me you never wished to tell your ally to BUG OFF with his constructor/colony ship that's deep in your territory....