Really good experience running Von Ryan's and with Fights First yesterday
I was feeling pretty skeptical about Von Ryan's after the Fights First nerf but I took two 3-bug squads yesterday to try them out. They really overperformed and I actually got some use out of Fights First.
In my first turn (going first), I drew Plunder as a secondary. I had some forward deployed Von Ryan's so, since they only cost 60pts, I decided to throw them forward to score Plunder for me early while simultaneously getting in the way of some Blood Angels (in LAG) Scouts that wanted to come forward and be a nuisance around an objective. 5vp for 60 points is a good start...
On my opponent's turn, he did two things that interacted with my two Von Ryan's units. His scouts shot and then charged my front unit of VRLs. Meanwhile, a brick of Bladeguard with a Sang Priest got out of an impulsor and nailed a long charge into a (wounded from shooting) Psychophage on my expansion objective. I used heroic intervention for free with my second squad of VRLs to join that combat.
First off, the shooting from the Scouts (and some extra incidental shooting) did basically nothing against the front VRLs. Stealth was a useful keyword here because I had only been able to reach my target bit of terrain with one model but Stealth meant I had cover from all the attacks anyway. Second, the free heroic from the second squad was immediately useful in that it stopped the Sang Priest from being able to pile in to the Psychophage, reducing the attacks it would be taking.
That's when Fights First showed it still had some use. One of my VRL squads was going to get to fight before their opponent. 5 scouts with the charge bonus from LAG should kill two Von Ryan's on average, and one was wounded already so he had a shot at taking out the whole unit. On the other hand if the VRLs went first they'd likely kill 2/3 and the scouts would probably end up losing the overall skirmish. On the other hand, there's a decent chance (34% with no extra buffs to the VRLs) the Bladeguard, with their rerolls saves of 1 and FNP, take 0 casualties from the other unit.
So perhaps my opponent was a bit greedy but he chose to activate the Scouts first. This meant my heroic VRLs got to fight before the Bladeguard and they did succeed at killing one of them. My Psychophage ended up surviving with a few wounds left which meant I kept control of the objective, plus the Bladeguard couldn't consolidate forward and were stuck in the open when I fell back the next turn (some of my shooting would have lost line of sight if they had been able to consolidate onto the objective). Not that it matters but the Scouts rolled really badly, only killed one VRL and were basically out of the battle from there.
Even if my opponent had activated his Bladeguard first and killed the Psychophage (not guaranteed - one more model would have made it likely but not certain) they still would've been forced to stay engaged with the VRLs and wouldn't have been able to break LoS. And in this scenario my front VRLs likely win the skirmish with the Scouts and may get some more mission play later.
So those two squads, 120pts, basically scored me 9vp directly, traded for a 65pts squad + the opportunity to kill a 245pts squad without having to contort myself. That's enormously good value. In the process of achieving these things, pretty much all their rules were useful. Even the much maligned Fights First. Very satisfying overall.