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I just found this and it looks interesting. It could use a "printable" version, that is one without the background. It is readable as is on the screen, but when printed in grayscale, would have low contrast and waste a lot of ink. Even on the screen, the dark yellow scrambled background is OK, but the black and red text would stand out more on something else.
I like the focus on little to no combat. Other than that:
I'm not so sure about the "have a d4, d6, d8, d10 , d12, d12+1, d12+2, ... plus modifiers, roll against difficulty 4 or 6 mechanics as I haven't used it before.
The Unicorns have "Levitate" cantrip that lets them move 5-50 kg objects for 1 round or maybe a few rounds. While Twilight Munchkin is no indication of regular Unicorn power, Rarity moves multiple objects all the time, sometimes heavier than her (luggage) or for prolonged periods (when making clothes). Un-nerf, maybe? Well, I guess Magic Trick sort of covers telekinesis too.
Magic Trick: Lol, hello Prestidigitation, my favourite DnD spell. Lots of other spells I've seen in DnD too. It is rather refreshing that Pony magic is significantly weaker.
Air Envelope: This reminds me of a Unicorn from 1st generation.
Feats for EP and PP are an interesting concept and have power similar or slightly above UP spells. Unlike RiM, no race of pony seems left out in TSWMLP.
Lol at the choice of "wild die" icon.
Oh wow, Flutterponies are so OP. It's no wonder an army of those was able to defeat the unstoppable smooze.
Huh, changeling drones and praetorians have the same armour rating, while the latter normally wear torso armour. They also seem to lack their disintegration attack, unless it is their green goo that can damage buildings. Also, no drain emotion or anything like that. I expected them to be casters of some sort and in small groups they don't sound so scary. But then with their favourite tactics being zerg rush, maybe they should be rather weak. No stats on the queen is probably a good idea.
It might make sense to provide separate character sheets for different races of pony, but I'm not sure about it. GM's reference at the end is a good idea.
It is mildly irritating that I need the Savage World book for such simple things as reading what Hindrances and Edges do. They are 1-2 paragraphs of text each, so it would be handy if you just copied them.
Some sample adventure module would be handy, but I guess your campaign transcripts sort of qualify.
Overall I'm impressed.
If you haven't already, you might want to take a look at this, but I don't like the third edition: www.mlprim.com