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I'm more in the opposite camp. With carbon you can finely tune the structure through layup, making it flexy in one direction, but not the others. Thus engineered flex and all. With metals that's a bit harder, due to their properties (isotropic, the same in all directions for all intents and purposes, while composites are anisotropic and thus distinctly strong in tension along the fibers, not so much in other directions), so you can only shape the 'joint' to have the flex there. An example of this would be a thinner neck to make it less stiff there. When it...

I'd guess any metal will have roughly the same damping coefficient when compared to a polymer (composite), so there shouldn't be a difference between Ti and steel. When it comes to difference in feel with hardtails, it comes from the size of the tubes, aluminium tubes are thinner wall with a larger diameter, giving more relative stiffness compared to Ti and even more so compared to steel. But that's because of the properties of the materials, both the young modulus and density - you use each material a bit differently when it comes to tube dimensioning to have them carry...