Actually interesting about pack alpha. They should have explicitly mentioned if you could (or could not) put them within 3" of another unit. I feel like the intention is no, I bet they just skimmed 14.2.1 and sorta assumed that adding models worked the same as returning slain models.
I think it's weird that there's just no rule that explains it at all. Returning slain models apparently needs it's own section but adding additional models is treated as self explanatory? Odd.
Riders of Ruin is still decent, but definitely not as good as it used to be. At least you can still ride over enemy screens and hit the unit behind it, provided that there is room to land. If nothing else, as long as your charge roll was big enough, you could ride over the screen, touch the back unit, then move back in front of the screen, doing D3 to both units. In some cases, you could also do a At the Double and ride over several units, or run through a screen to steal an objective. I will miss the original version though.
