About the peletizer, I wanted to know if that's volontary that pellets aren't shown in the price board. The other point is if players use the straw DLC then they have 2 similar products with different price/liter (don't know the one applied in such case). Are you sure to keep molasse in the recipe ? Because if I'm not wrong molasse come from your sugar factory and usually, farmers who produce pellet is for earning some more money with their "poor" product like straw or hay so if they need to produce "sugarfruits" and buying a factory that's insane. You must add molassse in the shop, like the DLC do.
I saw that "cowpellet" has the same "feedvalue" as TMR but need 3 times more products so nobody should produce them. I can balance the recipe and then having a sort of "TMRpellet" but why buying a building when a simple mixer would do the same thing ? Other solution would be to change the ratio in the animals xml if that's possible to be upper than "1" as value, what do you prefer ?
About the pellets recipes we have 2 solutions I think, keeping the same rate than the DLC (4/1 hay.straw/pellet) or a bit better, like your FS22 building which was 3/1 if I remember (and I prefered this old id3D, bigger but more "peletizer looking" ;) )