As above, do it now, I'm glad I did, made me a much more accurate and competent pilot, not nervous about a bit of haze etc. I don't use mine very much (I know... should keep in better practice - guilty) but well worth having in your armoury.
Personally, I'd recommend anyone to get theirs sooner rather than later as this time next year I suspect it'll be hard to find space as people panic to get theirs done before the April cutoff - if indeed that is still valid(?).
Even if (& I don't think it will for a minute) it were junked, the training I've had will never be wasted and could mean the difference between getting myself, passengers and aircraft safely back to earth or becoming a tragic member of the 'Lost control in IMC' club (ie: all dead plus possibly some innocents on the ground). While I wouldn't deliberately fly into IMC, were it unavoidable then if it means I can do the former to avoid the latter by using a defunct rating, then I'll do so every time, you can drag my sorry-ass into court and I'll happily face the music because I'll be alive to do so rather than another statistic (he's dead but he wasn't illegally using his instrument training - good for him).