Some of the realm buffs need a good touch of love from devs. There should less specific species buffed but more categories.
That's especially important in w12 with limited crops q mechanic. And local crop speed randomization. The situation, when u discover that u have a very good spot for hemp to grow may be excited ("Oh, I can make good green cloth so not only linen-cloth will be on stalls all across the world") but only until realms are up and all get flax-only buff. No matter how good your hemp spot is - +45% to flax will destroy it, making this part of game mechanics useless and harmful for those who were just unlucky. The same things with barley-wheat-milt. Or beetroots-carrot-turnip.
If buffs were just for categories like "fiber-crops (grain-crops/tuber-crops etc) grows faster" it would not only stop the despair of those who got the wrong bonus by RNG, but also make other relative activities (like trading or cloth-making) more viable.
The same situation goes to other "too specified" realm buffs - "Boars, Deer and Moose all occur in higher qualities" - why it is so specific? Maybe it would be better to replace those animal buffs with something like "Big Game/Middle-sized/Small critters"? It would make more good-quality spots and wider choice for hunting and crafting, so some animals won't be left abroad, but become more viable in certain realms.
And as a side-note: we have too many buffs for milk/meat quality, but none for wool, while it's still a vital resource, so maybe something may be done here too?