I think the problem is he doesn't
know if there's a problem. Missing effects don't always rear their head in a way that's noticeable if you don't know it should be there.
For instance, the searchlight effect was left out of the latest round of Stoof's, and, unless you knew what to look for it's tough to fix. Not to mention the developers were saying the searchlight effect was working for them in the forums. Unfortunately, the effect was commented out or missing from the cfg files, and the effect file wasn't included in any of the released kits for the Native FSX models.
Not a big deal, a little sleuthing and all is good, but, I think he's just asking what effects are needed to complete the model....
(P.S. I'm still trying to figure out what effect file is needed for the Bicentennial US-2B for the flashing lights top and bottom of the fuselage. There's no line for them in the "lights" section so I don't know what file it's looking for, but they're trying to flash, I get the classic black plane when they try to flash. And those lights are working fine in all the latest Native FSX models. But I assume I'll eventually figure out how those lights work and figure out what file is missing.
Or it could just be my laptop can't keep up and the effect file is there? It does have issues loading textures fast. I've improved it of late with some nVidia settings, but my 2018 Win10 Dell Precision laptop with 32GB and 4GB Quadro M2200 is still blown away in performance by my circa 2010 Win7 Desktop with 18GB and 2 GB GTX1050. Granted, I've got my desktop running at 3.8GHz, and the laptop is only 2.3 GHz (3.2GHz turbo), but, still, ya'd think... a "high performance" 2018 laptop is having trouble running a circa 2007 piece of software? Something ain't right. Onward sleuthing!)
(I do gotta say I'm not a fan of "auto-install" releases. I realize that
lots of people can't be bothered with understanding the file layout and figuring out what goes where, but it makes it hard to search through a bunch of releases to find missing files. And missing files and install goofs are a given no matter how professional level a release is. I make mistakes all the time in my releases.

)