Styg, if you implement bigger fonts for the lower left verbose log and for the hit, etc.. messages appearing over the characters, I will buy your game.
Increase the dialogue fonts shown in the trailer by one size and set that size for everything, inventory tooltips, lower left corner verbose log and combat messages over the characters.
You need people be able to see your written story and item & combat infos in order to enjoy the game. You are also a merchant and might understand:
more sales = better for your business.
The little fonts shown in the trailer were not exactly a good design idea. If your game runs in 1024x768 and because of your font rendering the fonts look a lot BIGGER in that lower resolution and well readable, unlike the blurry mess most Unity games create in low-res, then OK.