Issue: There are a few unique units which do not have any bonuses which remain after they are upgraded. Why a change might be good: promotions that stay on upgrade are fun, and enhance the character of a unique unit beyond its initial power spike maintaining "legacy" units is an enjoyable mini-game, though it is not required that your legacy units be uniques Unique units obsolete later, so some civs have the option of building old units with special promotions and upgrading, or just buying the newer unit. Other civs don't have an option since the promotions wont carry forward anyways City state unit gifts that don't retain any promotions are white elephants, because city-states will continue to gift them unit long after they are useful, instead of giving a current unit. Consistency is nice I want to have a discussion about whether this is something that people are happy with and what changes, if any, would be supported. For the purposes of this discussion, a unique unit which has 1) any promotion which the base unit would not otherwise have, and 2) is carried forward is fine (eg. Hun archers with Accuracy I is not in need of change). Units are only considered if a unit upgraded from a unique unit is indistinguishable from the base unit. Unique units with no carry forward: Naresuan's Elephant Atlatlist Impi Naga Malla Conquistador Legion (has Cover I) If I have forgotten or missed one, please let me know, and I will edit this list. Possible fixes: Naresuan's Elephant - Give either "Double Great General Stacking Bonus", or a New Unique promotion: Songkram Yuddhahatthi - Great General points on Kill Spoiler : The unique unit gets its name from a famous elephant duel between the generals of the Thai and Burmese armies, where the Thai general (Naresuan) killed his opponent (Mingyi Swa). Some sort of great general-related bonus would be fitting Atlatlist - Let Atlatlist strike stay on upgrade. Maybe reduce the damage boost Spoiler : Atlatlist strike currently is +50% vs wounded units. If that is too good to stay on promotion then I think 33% would do the trick. If people have a problem specifically with the name (ie. a promotion called atlatlist strike on a crossbow), then it could be renamed "poisoned dart", or "poison-tipped". Impi - Let bonus vs. Gunpowder stay on upgrade Spoiler : Impi enjoys the benefit of Zulu's unique barracks promotion line, but neither of its 2 unique promotions stay on upgrade. I'm not aware of any other unit which has the bonus vs. gunpowder promotion, so it is effectively a unique promotion. Could rename the promotion "Legacy of Isandlwana" if the name is too boring. Naga Malla - Give unit either "Accuracy I" or "Range". Reduce base melee CS a bit to compensate. Spoiler : Naga Malla is a really mixed bag. It has considerably more defense and is available earlier than the cuirassier, but it has -1 move, and can't move after firing, which are significant drawbacks. The Naga Malla is the only ranged elephant unit in the game. Elephants were more stable as firing platforms than horses, and provided a higher, unobstructed line of fire. Range would stop the NM from getting in the way of your other units, as it often does currently. If Range is too much, then accuracy I would at least give the unit something. Conquistador - Let either 1 or both of its +2 vision stay on upgrade Spoiler : Conquistador has +2 vision. This is very useful, but it wouldn't make the unit game-breaking if it stayed on upgrade. You could also split the difference and have only +1 vision stay, while the second +1 vision is lost. With conquistador being 1 era earlier pioneers, you would get much more value from the unit by settling with it anyways. Allowing a promotion to stay would at least be making the most of a bad situation, if you find you simply can't use your conquistadors to settle.