EXACTLY, the problem is in recent years guys think they need the hubble telescope to make a long range shot. for a long range hunting shot, a scope that maxes at 14x-16x is plenty of scope. I have shot sub half MOA with a 3.5-15 NXS @ 1000 yards. shot numerous coyotes between 400-1000 yards. You don't need or even want FFP unless your scope is very high power ie 5-20x 6-24x etc. The question to ask is there going to be need to take a long range shot off max power. for me I simply use scopes that are medium power range. That way I have a SFP reticle I can actually see and use on low power.
FFP is for PRS shooters and other ninja range shooters. Those high power scopes I talked about are for varmint hunting or load development.
all I am saying is give the V4 a solid shake in your decision. I was told zeiss ships the internals to LOW for assembly in the v4. So its possible the V4 and v6 internals are the same. Also keep in mind those saying the v6 is so much better because that is the scope they bought may be hesitant to admit the better scope might be the cheaper version.
Frankly I really don't give a rip about the glass that much. That should be down the list in your decision making. first does the scope track well and does it work well mechanically. Next eye relief, eye box, ease of getting behind. after all that glass. I don't care if the scope has GOD glass, ubber glass, nazi glass, schott glass, or tequila shot glass. if the first few things I mentioned aren't squared a way choose something else. My 10 year old elite 4200 has plenty of glass to get well beyond legal light. hold the scopes together v6 and v4. If your looking at the scopes in the store I don't know how anyone would pick the v6 as being the better scope. perhaps there is some difference in low light but in the store I can't see anyone objectively picking the v6, unless they are hung up on the whole made in germany deal.
I agree with most of your points. I think good glass is over rated but I always compare when I do my reviews because some people care. As far as justifying cost I guess that depends on to what extent. We are all justifying what we spend our money on or we would have bought a Savage axis with a cheap Nikon on it at Walmart. As far as me justifying something being better than something else solely because I spent money on it that will never happen. If it does not perform it leaves my house without a second thought. No emotional attachment to any of my gear.