Well, the change of the Assault Marines, and the Stormraven will lead a full new concept -this one is almost balanced ,and not a bad one.
In case of the Stormavens, Epic Armageddon is a different game, than 40k. things might work there, but are hard to translate to a different system. Stormravens were designed to be a dedicated BA AT vehicle in EA -it was not new, that they have a different role in 40k. To fully redesign them is not a good idea -something is just don't work that well, but a radical redesign can kill the whole thing (and I bought 12 of them -it wasn't cheap

)! Remember, Land Raiders are not SM MBT's, they are heavy transports -but why do codex marines have a stand alone LR formation? Because EA is a different game than 40k, so unit roles should fit this system. for example BA armies are still not good at hunting AV/WE units, without the titan plasma weapons, etc -so they need a unit, to counter titan shields, RA (with owerwhelming number of hits). These are not real problems in 40k, but should be handled in EA. My opinion is, Stormravens should be limited somehow, but there's no need of radical changes..
Assault Marines -they don't work, ok, true. Because they are expensive -for a CC unit! There's no need for another activatin booster BA unit, the list will become unbalanced/overpowered -it's almost balanced, so only minor changes are needed, not an activation booster assault marine spam -try to build a list around them, playtest it a few times, then change it! Codex Assault Marines have a different role in EA -they are good at hunting down weakened units, with the help of their mobility, (or capture objectives, etc- but it's not the question here) -but in BA armies, they should work on their own, as a hard hitting unit, in the main line. So my objection is about that the appearance of small units (with the reviously mentioned roles) will not support the BA theme -you can support their appearance by lowering ther price with 25points -and plyatest them to hell!
