... issue existed with Slush awhile back, and they were filtering out blocks by accident. ...
Ouch - losing blocks sounds bad

The block size is stated in the first post.
It's 998888
The effect on the reward is minimal.
I guess you could compare a useful figure of the average block reward, since block size really doesn't matter any more - the whole scam about SegWit and scaling was just that - a scam.
People pushing spam on the network to help core get their roadmap to off chain transactions that they get paid for.
Bitcoin centralised control at it's best.
Anyway, I'll set the block weight next week when I deal with the upcoming 2x and work out what we're doing for that.
Next week, for me, is when I'll be dealing with all that, after I finish the share processing this week.