4.15 tonemapper - is it possible to simulate old effects?

[Chosker]

since there still isn’t a proper workaround…
I wonder if anyone has tried to ‘replace the tonemapper’ in a postprocess material
basically do this: https://docs.unrealengine.com/en-US/Engine/Rendering/PostProcessEffects/PostProcessMaterials/index.html#replacingthetonemapper - but skip the ‘reinhard tonemapper’ custom node

if I place a sphere with an emissive full-red color with 100.0 value (so R=100, G=0, B=0), the compared results are as follows:

as opposed to disabling the tonemapper via the CVar, here everything else that’s tonemapper-dependent (TAA, etc) still works.
the “only” caveat is that the EyeAdaptation node seems useless and my scene becomes fully dark

with 4.24 the EyeAdaptation node now works in postprocess materials, so the above workaround now works respecting all of the exposure settings
however the rest of @rosegoldslugs comment is still true - you lose the rest of controls for color grading