I'm thinking of an order for USA that would go pretty good with ramp. Although it's quite powerful, only being able to use it once makes up for this.
Here's the idea.
It's an 8k US elite order. Originally I was thinking it's ability would be 'deal damage to all enemy units equal to your remaining kredits'. However, combined with reichbank or anything similar this would be almost an instant boardwipe (while some other nations do have this kind of thing, I still think it wouldn't really fit the ramp kredit slot gain style if it worked with temporary kredits).
Instead, it would be better to use something like 'deal damage to all enemy units equal to each kredit slot you have above 8' (perhaps worded in a simpler way).
This way, you wouldn't get an extra 5 damage from reichbank, which would make it pretty overpowered, but instead only kredit slots would be counted.
This would mean that if you have 12 kredit slots, it would be 4 damage to all enemy units, and 6 for 14, etc.
With a good ramp deck, this could be a boardwipe card, but only with lots of preparation and therefore still fair.
Btw how often do the Devs check the suggestion page? Does writing something here have a good chance of being seen by Devs?