Indeed, I think Blade 100 does not need to much weight @ 12.
I have version 8 and it comes with 299g, 277SW and 31.2cm (unstrung spec). Meaning enough headlight (which I like very much).
I have added 10g silicone in the handle (+ Pacific calfskin Leather) and 6g @ 12.
Strung with Kirschbaum Competition 1.25 @ 46, I ended up with 336g, 327SW and 31.5cm (which is my go to spec for last 4 years when I have been playing with Wilson BLX Pro Open 100).
But, since Blade has indeed too much mass in throat area, swing this stuff takes some extra efforts, despite of its headlight balance.
Now I think to reduce amount of lead under the bumper from 6g to 4g and I will see how it goes.
Otherwise, it is a great racket. Just my 2 cents.