Well I have a pretty conprehensive list in the oyher post. One thing to remember is colonise. If you have stellar cartiography you can send ships to stars that way, otherwise you have to explore with your colony ship. Colonise every planet you find. If you.want stop after you have your percent of the map. If there is a resource build a constructure, and then build a starbase. Once you build a starbase wait untill you are either at war, or the colonise phase is over. After either criteria is met then finish upgrading starbase.
As far as planetimprovement your aI has to pay attention to resources, and adjancy bonuses to build apptopriate buildings. The colonisation events are important on this you need to keep track of research, production, or starshIp bonuses. untill you are done with the colonisation phase you don't have to worry about you technological capital, economic capital, or polotical capital. Once the colonisation phase is over add up your production, and research bonuses from colonIsatIon events tImes class addIng the bonuses from the research and productIon tIles. Not including ither tIles. Compare with class. Whichever is higher gets your technological capital. A technological capital gets all your research, and manufacturing bonus buildings even the manufacturing capital. On the rest of the tiles build factories unless there Is a research or some other bonus. As far as percrntage produxtIon bonus buildings don't build if it is more constructive to build a factory instead.
Now on the next capital you are either count morale or food bonuses withever is higher after added to class of planét, and then cimpare to other class of planets minusing other bonus tiles to find the next highest class. Once you find this is ehere you build ypur economic, snd political capital. If your approval is below 50 percent then build morale building otherwise build farm.
The only exception to thisis your planet if it has a bonus on it. If this appears on your planet you should build all you planet starship bonuses a power plant, and factories.
Always reserve your third biggest planet for building trade goods... while you are waiting build factories and bonus buildings. This planrt may change as you colonise other planets. If the player builds a trade good, or galactic achievement then build one.
Make the fourth for super projects.
Any research or production planets notincluded in the above. If research buiId research bonus buildings, and factories. If production build production bonus buildings, and factoties.
On every other planet type build starport four factories, snd a morale resource.after this seeif income is more than expence If this is so then compare your research-production-economic-farming to equal each other. If expenses are more than income then build your best economic building. You can use sliders to fix this, so as to not to go into the negative to prevent the treasury from falling below 0. Don't lrt the population cap of building farms go above 40 billion. Only upgrade buildings if can afford to. Never terraform tiles unless you don't have sny empty one's.
If the yor getsincrease by manufacturing max out population first.
If yor build five starbases per influence, othetwise if anybody else build 12.
In diplomacy the ai should never trade away planetsit has wonders on, or anything above a 15 , and onIy class 10 -15 if they have a lot of them. Never trade survey ships. Don't trade warships to the point it causes a lower military rating than who you are trading with. Never trade with anyone you are hostile with, or at war with. Never trade techs that don't give you an advantage like a better unit.
Now as far as researching you should take about turns to reseaech It unless there are no other techs. Now your best techs are your bonuses. Go for surver pretty quickly. Priorities military, morale, economics, research, diplomacy, governments, and population growth. You don't need to research universal translator, or any diplomacy techs for that matter.
When hostile towards others you should build against their stats ships. This still works like this at war.