Yeah that sounds much better but a 20% chance for doublestrike is pretty overpowered i think especially with crit. i mean for every dd-rogue that would be a musthave and this would prevent me of giving points into strength (which is increasing the melee dmg).
I have to say that i love the definitions of the attributes how they are now and more perks would outbalance this again.

And i think we all know that larian is not always good on balcing skills (skorpions in DD, the multiple arrow in D2 are totally overpowered und kill even the endboss in seconds even on nightmare mode).
and thats why i have the fear that this perks cant be well balanced without forcing players into a certain skilltree on hard/nightmare mode.