Every layout I have built on this forum has used Peco Code 75 points and either C+L or SMP bullhead flexible track, all joined by standard Peco Code 75 rail joiners. However, Carrog in 00 uses Peco's new bullhead track with Code 75 flat bottom points. Convincing looking track is more about colouring than anything else.....
After watching your various layout incarnations, you are quite correct in that track which is well ballasted, painted and weathered does act to hide certain discrepancies. On the other hand well made trackwork can be visually ruined by poorly ballasting, painting and weathering. Most things are as good as their weakest link
The next thing is that I think we all see/remember colour differently, this is where artists come into their own, they have the gift at the same time of accentuating something, they are able to tone everything together, a true skill if not a gift
Of course looking either square on of from above 00 does look a bit narrow, I guess the trick is to take the eye away from this and good painting does create either an illusion or is it a distraction. To me the correct timbers size and nearer to scale spacing also adds to the illusion, but others may see it differently. Each to their own