Finished all levels so far, it is a really fun game. Impressed with all the different levels and units. I have high hopes for future content, and even just trying out new combinations looks like it could be fun for quite a while. Encountered no bugs. Something that is annoying is if you don't have enough speed to reach an enemy across the screen and lose because of it, but that's just the downside of losing cards / not having speed stats so I don't think that's "wrong".
There used to be so that when you lost card you lost only 1 speed and not as much that card had speed. I liked it as it was but I guess is will need to use of how is now

Speed is important and what is less then 5 is bad. 1 speed will not even get you to the top of the field.
just noticed this, so when your card loses speed, any way to get the speed back for that card?