I like that it create a larger incentive for smaller stake holder to own more Steem.

Definitely! And it has the potential to discourage vote spam, which I very much like. It is just a really small number and so I have no idea if we even notice the change...

I find 1.219 SP to be quite an odd number.

It is probably one of the calculated limits? Maybe 1 SP added to 0.2 STEEM creation fee or something like that. I'll check the code in a bit to see if there is a reason for that number.

Edit:

https://github.com/steemit/steem/issues/1764#issuecomment-350313957

Seems that is where that number comes from.