So the most you could get is if you were a Legendary who maxed out your activity points in the last year, in which case you would get 1 * 0.4 * 1000 = 400 sMerit.

Note that I later made an adjustment giving 500 extra merit to some hero members, but no extra sMerit was given here.

I'll probably publish a dump of the initial sMerit at some point.