The only thing I can think of is looking into experiment one? It's really good against almost all of your match ups (survives board wipes and targeted removal.) Also maybe some form of ramp with and Archangel and Advent being at higher costs and with only 23 lands. I also see a lot of these lists running unflinching courage, as its just brutal against he black match up.
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There's a few things that the tokens archetype does extremely well: protect planeswalkers, stone wall non-trample fatties, and discard. (Mind you,I enjoy a more controling Token.) I'd suggest adding some number of Thoughtseize and Inquisition of Kozilek. Liliana of the Veil is also just nuts right now (consistant discard vs combo city.) Also, with fetchlands, adding some number of swamps would be good (2/3.) I would take out the Leyline of the Meek (great T1, but aweful later on and also gives away your plan to your opponent,) the blood artist (without a sac outlet, you cant just abuse him,) Rhys (imho, hes just too slow outside of commander,) Tirel (life gain really isnt that good,) and Devine Reckoning (board wipes aren't what a deck that wants to flood the board wants.) I'd replace them with 2/3 liliana's (consistant discard and a sac on command is AMAZING,) 1 more Kight-errant (1 token, then a 3/3 flyer per turn, great as a finisher (plus her ult demands an answer,) 1 more sorin (constant tokens and an anthem built in,) and ~4/5 discard (you decide on what combo of Thoughtseize and Inquisition.) Finally, MAIN BOARD THOSE PATH's! There just that good. Also consider for you're sideboard phrexian or mirran crusader (they're nuts versus their respective colored decks.) Sword of Fire and Ice is also really good versus UWR control, as is Sword of War and Peace.