NBLH - 11
4 Wasteland
1 Strip Mine
2 Stifle
2 Back to Basics
2 Null Rod
Gro decks, unlike Keeper for example, don't want to slow down the pace of the game. In my experience with dryad based decks, mana denial is not as effective as a strong counter base and lots of card advantage. I think this is especially true since your NBLH is rather unfocused. On a sidenote, running lots of two-of's has bad synergy with intuition.
My advice would be to keep flexible utility like stifle, and hosers like Back to Basics, but drop the rest. I can see Null Rod as a possible sideboard option (against workshop, storm and mask), but wouldn't run it main unless I was running 3 or 4.
The creature base looks fine. For a minute I considered Forgotten Ancient as an alternative to werebears, but I don't think this deck has the acceleration. You may want to check out PhantomTapeWorm's new creation just to see if anything can be borrowed from it.
Control/Draw - 23
4 Accumulated Knowledge
1 Deep Analysis
1 Gush
2 Intuition
4 Brainstorm
4 Force of Will
3 Counterspell
2 Misdirection
2 Cunning Wish
The biggest factor to consider here is whether or not you're going to make Intuition a focus in your deck. If so, you should increase the number of Deep Analysis and add a Cunning Wish. You should also bring the 3rd SB Back to Basics main, or run all three in the board. With the higher curve sol ring looks like a solid addition.
I reiterate that I think you should substitute your mana denial strategy for more counters.
Mana - 18
2 Windswept Heath
3 Flooded Strand
4 Tropical Island
6 Island
2 Forest
1 Lotus Petal
This looks fine, but I doubt you'll need the second forest, especially with werebears providing green mana in a pinch. The Lotus Petal looks odd, and I already mentioned Sol Ring.
Regarding the maindeck as a whole, usually gro decks run some sort of utility for creatures and artifact main. Since you don't have access to pernicious deed, powder keg would work if you can find room for it.
Sideboard - 15
3 Viridian Zealot
2 Submerge
1 Oxidize
1 Naturalize
1 Berserk
1 Stifle
1 Back to Basics
1 Null Rod
3 Tormod's Crypt
This looks good for a general metagame. Submerge looks weak, and it would help if people posted card text for Darksteel cards since some people have jobs and don't have time to read primers immediately after they come out
To throw in my own two cents, I played a variation of Emerald Alice at the Waterbury tournament. Although it was the only time I've 'tested' the deck, it performed pretty well. Picture the above deck, except it runs a morphling, and additional draw instead of wearbears and mana denial. It also splashes black (two Underground Seas) for Yawgmoth's Will and Cunning Wish targets.
The sideboard looked like this:
4x Oath of Druid
1x Gaea's Blessing (one main for dragon)
1x Woodripper
1x Spike Weaver
2x Null Rods
6x Metagame instants
Just something to think about...