Great stuff!! I'm happy this article is out, I've been wanting to talk about the Raven for a while.
Back when Ghost Targets was overhauled I used it as an excuse to field a good number of lil' electronic boats (sorry Frabby) that I hadn't touched for a while...the Raven was one. From what I've found, the Raven isn't an in-your-face package. Its speed is way too slow for that. Instead, I really think the fluff hits it for this one - used as a lance's "fifth member" it can really shine.
In earlier Succession War games the -1X can hover close to important 'mechs and give them the Ghost Targets benefit as much as possible. If used smartly, it can easily stay out of sight behind a few wood or level two hexes, while a larger more imposing 'mech suddenly becomes that much harder to hit. It's a valuable asset in those low-tech games, and one that I've found good use for.
Later on, I'd say things mostly stay the same. The only different, of course, is now you not only have more range, but many more options. Standard ECM can come in handy as needed, but I'd personally keep it on Ghost Targets (don't want your Raven to die while it's interdicting something) and use the TAG as needed.
The Raven II, though, it the most interesting one of the bunch. The Improved Communications quirk is huge - if used, the Raven II can use its Stealth Armor and Bloodhound at the same time, since the ImpCom quirk lets you ignore all hostile standard ECM effects. This should also mean (though I'm not 100% on this) that the TSEMP ECM effects shouldn't affect you either...not too shabby. It's last little quirk is the Angel ECM; you can use the Angel for the Stealth Armor AND use it for Ghost Targets if you want (although your own weapons fire gains a +1 to hit...but that's really not much of a problem on the Raven II). Otherwise you can rock the standard ECM as usual, or turn the Stealth off to interdict something that really needs it - because you're now fast enough to actually rush in and accomplish that kind of job. Load only alternate munitions in that MML/5 and you have a hyper-flexible platform that can really help you and hamper your opponent. I like it quite a lot.