Optik

Hey Optik - I don't know if you were still active, but I was wondering if you might have your civs available separately? I'm interested in your Carib and would like to install them in my game individually. Thanks!

Diploscreen (sorry about delayed response)

About graphics: do you mean icons and diploscreen (yes i can help you)?
Without any knowledge in lua script i can't created a UA or building like you want.
Unit promotion witch can be unlock at certain techs, maybe you can try this (don't know if that works):

Creat a unitpromotion.xml file, add a UnitPromotions for UnitClasses and add a prereqtech like this:

<UnitPromotions_UnitClasses>
<Row>
<PromotionType>PROMOTION_ANTI_SUBMARINE_I</PromotionType>
<PrereqTech>TECH_ASTRONOMY</PrereqTech>
<UnitClassType>UNITCLASS_SUBMARINE
</UnitClassType> <Modifier>50</Modifier>
</Row>
</UnitPromotions_UnitClasses>

Well, first part is that I can't make any graphics (combination of software, knowledge, and terrible art skills), so, if you could help in any way there, it would be appreciated.
Secondly, more of an as-it-comes up basis, I'm planning on making several civs, so, I figure I'm bound to have issues, and, IMO, your civs were the best, so, I figured you were the best one to ask for help. At the moment, I'm wondering if you can make a UA (or building) that improves city attacks by percentage, and units that get better as eras progress (I.E., promotions that unlock at certain techs, like navigation).

Question: Could I get some help/advice with modding a new civ in?