There you go. One opinion why this, and one opinion why that. It just ends up in a never ending cycle. Your opinion on what is happening is different from someone else. To satisfy both views you need to balance on two scales, then three and so on. It doesn't matter why people feel that changes should happen, it just matters that someone else will come with an argument to change things again. The Buff/Nerf cycle is born.
Just because there's differing views, doesn't mean everyone's wrong. I actually have evidence to back up my views.
Take the FDL for instance, and compare the SCB performance of the FDL in 1.4 and 1.5.
in 1.4, a typical FDL build would look something like this:
http://coriolis.io/outfit/fer_de_la...60404000000025j455e5466.AwRhrSutjo==.Aw18aQ==
Total shield strength: 550
Total recharge capacity(in 1.4): 1942
Now let's look at a shield focused build in 1.5:
http://coriolis.io/outfit/fer_de_la...60404040400025j455e5466.AwRhrSuriA==.Aw18aQ==
Total shield strength: 707
Total recharge capacity: 1950
The power issues of needing multiple SCBs powered at once and the cost of having a utility slot as a heatsink is neatly solved by the additional power from the FDL buff, acting as a perfect testcase as to if the change in the meta is down to weak SCBs or other issues.
So here is a clear case where the previously dominant SCBs are not affected in the slightest, or even strengthened. If the issue was down to weak SCBs, this build would surely be omnipresent?
However, this build is incredibly rare compared to rail-spam silent running options.
This is due to the strength of the new build, not the weakness of the old: the old build has gotten stronger.
The lack of diversity in the current meta is down to the strength and lack of counter of silent running FDLs and FASes, and the weakness of small ships.
Let's look at all current top tier PvP-viable ships:
FDL
FAS
Corvette
Cutter
Anaconda
The balance between these ships is exquisite, with all having a specific use, weak points and strong point. Here are the non-PvP viable/outclassed combat specialists:
FGS (Outclassed by Python)
Vulture (strictly worse than FAS)
Courier (strictly worse than FDL)
DBS (strictly worse than FDL)
Viper IV (Strictly worse than FDL)
Viper III (Strictly worse than FDL)
Asp Scout (would be viable but for massive hitbox and 2 utility slots)
Imp Eagle (outclassed by FDL)
Eagle (almost good enough flight model to be viable: too weak due to lack of internals and slow top speed)
Notice anything? All of them apart from the FGS (which will benefit greatly from SLFs) are *small* ships.
If small ships could outfly the FDL and FAS, this meta would solve itself.
I don't even think the FAS or FDL should be nerfed (maybe revert the FDL's flight model changes but that's it).
What's needed is for fighters to be strong and useful, with an actual utility role.
Oh, and nerf railguns