Originally Posted by
HPB_Eggo
I've never played this deck, but I have a lot of experience with green creature toolbox decks, so here are a few suggestions...
Lotus Cobra is good at its job, and with all the Titans/Maps/Crop Rotations you're running might let you get an Eldrazi out one or two turns earlier. At the very least, it always turns Titan into costing four instead of six (assuming you have the six mana, of course). It might also allow you to cut back a bit on colored sources.
Wood Elves has been doing all right for me in Nic Fit, but I'm not sure it fits well here. Might be worth considering.
My final suggestion is a little odd, but Avenger of Zendikar also seems like it might work well. It can create a whole bunch of random blockers, you only need to run one, and those blockers can get big and become win conditions if you have a Titan or two out.
I'm sure there are other things I'm forgetting, but those are the MD suggestions...
Actually, thinking properly, some SB suggestions that might or might not be really good...
Scavenging Ooze. Obvious reasons, but possibly not enough green to use it properly.
Thragtusk. A guaranteed blocker and five life is good against many decks, and has a light color requirement if you draw it.
Gaddock Teeg, if only for combo and whatnot.
And, fourthly, a Wickerbough Elder/Qasali Pridemage. Useful for getting rid of pesky enchantments and whatnot.
Not sure if any of those are better than what you're currently running, but they certainly aren't terrible suggestions, at least. Hopefully at least one of those is useful. I'm honestly really interested to see how Avenger of Zendikar works out, as I've always waned that card to do something useful in a format like this.
EDIT: In related news, a singleton Boseiju seems like it would be amazing with GSZ. Unconquerable Titan search could be very strong here. Also, out of interest, why aren't you running 1-2 Loam in the sideboard?