Removes:

Shield of the Oversoul seems like it does too little when the object is to swarm the board with tokens.

Wrath of God will likely hose your deck more often than it helps. Which means it will likely be a dead draw almost every time you get it.

Centaur Glade does too little for its not cheap mana cost and needs constant feed to do literally anything at all.

Reclamation Sage would be good if you didn't have quite so much artifact/enchantment hate already. Right now it just doesn't do enough to help you win, just slow down your opponent, which other spells will do better.

Fracturing Gust will just as often wipe your enchantments, and with no way to recur them (unlike most other opponents who run enchantment heavy), you could be mostly screwing yourself for life.

Oversoul of Dusk is great and all, but it doesn't help with a token rush, nor does it do anything other than be a large body that protects itself okay

Phytohydra an opponent will likely just Path this guy, Counter it, Murder it, or find some of the many numerous (and common in format) means of removing it without it become too big a threat to deal with.

Suggestions:Spirit Bonds could get pretty ridiculous in a populate deck, as could Hero of Bladehold or Brimaz, King of Oreskos.

Giant Adephage is mysteriously absent, as is Darien, King of Kjeldor. Cathars' Crusade is also amazing with tokens. Primeval Bounty is a whirlwind of value with Trostani.

Also, I would include Conjurer's Closet and Chord of Calling.

Have you thought of Seance? The recursion, plus the ability to populate the token, makes for a powerful trick.

Trostani is easily my favorite commander. Here's a few ideas that I found useful. The Walkers Elspeth, Knight-Errant and Garruk, Primal Hunter are great token makers. Freyalise, Llanowar's Fury is just plain amazing for ramp.

I don't see Avacyn, Angel of Hope, but due to cost I held off on her for a long time too. A decent card that works in the meantime is Rune-Tail, Kitsune Ascendant / Rune-Tail's Essence. It's not a perfect match, but does provide some protection and he costs 1/10 of what Avacyn would set you back

Here's a link to mine to see what I did if you're interested. What Can Lifegain Do For You?

nice deck why not check out my Trostani EDH for some card references.

Chord of Calling can be very powerful in token decks. Emeria Angel is a very powerful and inexpensive source of fliers. If your budget allows, Voice of Resurgence can give you a lot of breathing room against blue and black decks trying to ruin your afternoon. Likewise, Dragonlord Dromoka is just a very solid pile of beef. With any general that interacts well with ETB triggers, Conjurer's Closet is one of the best artifacts in the game (I am on record as calling it the best non-mana artifact in EDH). With your general, Serra Avatar is just plain funny.

Lately I'm having a hard time not putting Thunderfoot Baloth in every EDH build I make. Orochi Hatchery can put out a lot of tokens at once. With any general with a tap ability, Thousand-Year Elixir is great.