Can you make Perseverance cost only 2 mastery points?

The mastery was so cool in the season's beginning and you nerfed it once and it was still nice, but then you nerfed it again and it hasn't quite been the same ever since.
However, if you lowered the cost to two points, ergo point 1 gives 0.5% and point two 1% of your missing Health as bonus HP5, then it would be far better for tanks and what-not.
I reluctantly put 3 points into it at the moment, just because I'd like some more free HP5, but it seems to ... pricey, overpriced.
So please?