Heh...  I've begun doing BFG conversions as well, also straight from BFG to Nova with no AE middleman.  Going to start porting them over here soonish.  Quite curious to see how you handled the Eldar, because I do not have a satisfactory solution yet either.

Well, first of all, the Chaos conversion s Mark did were stored in the sandbox, which was cleared out a few days ago.
He may be able to reload those into his file, but we'll see.

Once we adopted a baseline for the weapons batteries and torpedoes, the conversions were fairly straightforward.
I won't go into the details, as you can see them in the ship designs themselves (at least the Eldar in the "underling" folder.

The Eldar were a little different matter.
The saves ability came over okay, as we simply gave them a high shield rating.
The problem with the Eldar is that in Nova it's hard to reproduce their maneuverability.
There is no second move mechanic in Nova, so the question becomes how do you make their speed pay off.

And the quick answer is you can't.

In Nova, once you get up to about a thrust of six or so, any thrust above that starts becoming a diminishing "return on investment." I don't have any ship design experience in previous editions, but I have dinked around quite a bit with Nova (but not in the last two or three months, so the point costing may have been tweaked a little in the interum).

We found that keeping them to a thrust of seven (cruisers), and eight (little guys), made them a little faster than the norm, but still allowed for some offensive punch.
I toyed with some designs using a thrust of twelve, but the verdict is still out on that.

For protection, a little ECM, quite a bit of shielding, with a layer or two of Stealth, seemed to capture their ability to be hard(er) to damage.
We experimented with Cloaking, but in our opinion that's not really how they work in BG.

Overthrusters is an ability that was added after our initial ship designs, so that may be something that might be worked into to capture their maneuverability a little more.

Hopefully Mark will be able to reload his Chaos stuff over the next few days.

Kevin

I have a ZIP file of the designs that were in the sandbox.

We didn't do anything with the Imperial ships, as we were dealing only with Chaos and Eldar.
But you're right, we 'd probably want to replicate that with any Imperial conversions.

My solution for the armored prow was Directional Defenses (Forward) and either Stealth 1 or ECM 1 (to taste).  The -1s from DD and Stealth stack in the forward arc to halve incoming fire from that direction (which is equivalent to 5+ vs 6+ saves in BFG; 6+ will suffer half as many hits at 5+), while the -1 Stealth cancels the +1 outside of the forward arc.  It does leave on a bit vulnerable to Fire Control, though.

And yeah, Overthrusters look like a good match for Eldar; it's a reactionary post-move mechanic somewhat in the spirit of a second move, and very 'farseer'-some.  8 thrust is about what I came up with as well.  I'm mostly concerned that they only have short-range, forward-facing weapons, and not many of those (though they are accurate)...  Did you have trouble getting into position or inflicting damage, Underling?

Ahh, upgraded the range to 9.  That'd help, certainly; I think that's what I ended up doing with my later-gen AE conversions.  Getting in, hitting, and trying not to die matches my experience in AE pretty nicely; cloaking sure helped in getting out intact .  What shields did you use?

OK; I was looking at ECM 4 and Shields 4+, so similar ranges.  And fighters as slow-firing seeking weapons seem perfectly reasonable; if only you could fire them at other seekers for that combat-interceptiony feel.