Hello!
I share your opinions and some of your preferences (adaptable decks over specialized, darkness is the best element out there), but not your optimism.
6 creatures (+2 barely dealing damage and useful mainly for CC) are not enough to overrun gold decks for me.
Also 1 Eclipse for 4 darkness creatures simply seems like it doesn't comes up (and health 3 is really fragile)
Mana balance is good and PC standard - but I still don't feel it solid enough.
At now I'm trying to change it to better suit my game style like this:
Hover over cards for details, click for permalink
6tt 6tt 6u1 6u1 6u1 6u9 6u9 6u9 7t4 7t4 7t4 7t4 7t5 7t5 7t5 7t8 7t9 7t9 7t9 7tb 7um 7um 7um 7um 7um 7um 7um 7um 7um 7um 8pj
If I will obtain some results I will post some better version.
Thanks for inspiration tough!
Taglio