Having completed latest build some ideas/notes (as usual, do what you want with them, or nothing at all):
1) If we go necromancy path, we have an extra mutagen potion available for the cat. But, if we go ecomancy path, we have an extra purified potion that isn't used up. Maybe we consume it ourselves... or we can use it on the tamed dire wolf?
2) We have quite the large amount of herbs, vials, and spring water left, after doing all the actions. Maybe we can use it to offer Alchemy Training for gold. Like when we first learned Alchemy ourselves.
3) We have 5 remaining carrots after feeding the rest to rabbits. Maybe with ecomancy, we can create carrot warriors?
4) If we go the goblin route, we have excess mithril that doesn't get used. Maybe we use it for wolf/lizard rider barding (animal armor), or we give it to our goblin brutes... or we craft mithril weapons for our most powerful undead minions.
5) We have 5 traps left after using them on rabbits. Perhaps we can use them to capture fairies, and then have 5 fairy wings to use up. Maybe we bait them with Mana Crystals... as if we went evil route, we'd have nothing that uses up the Crystals we mine.
6) We have excess leather and dire wolf fur. Maybe we create Soft Leather armor from it, based on existing leather armor but all the new stuff.
7) Could go with another Round of the Arena. Round 5 we fight a dragon. Or possibly a necromancer that raised the Demon Assassin from the grave.
8) We accumulate a lot of gold over time. Perhaps we can find a black market dealer that sells us expensive items. These might not say increase power directly, but could lead to quest locations that could increase power or suchforth.
9) Another option is you can invest gold into the respective villages for large xp boosts to various stats. ie Investing in Goblins gives you Farming or Animal Handling. Elves gives you Precision or Movement.
10) Perhaps reading all three racial books (ie 10 Phrases... Sound as... How to...), unlocks a 4th book that talks about the history behind why each race hates eachother, for +100 reading.
11) Having the option to murder the sage after we help them. For a much lower power/time cost needed, to kill them. So that we can still get their corpse, if we decide to be a necromancer but don't reliably have a way to get to 2000 power. And if we do kill them, after helping them, we can help ourselves to the roast chicken, wine, and lemon shaved ice.
12) If we learn Ecomancy Magic, we can summon up the vines on the door, to hold down the guardians, reducing the combat power cost (and time to kill) by 50% and then we don't need to clean off the doors either.
13) If we go Elves route, we can tame various creatures, which require a high animal handling skill.
14) If we fully help out the Vegetable Vendor, we get a questline to find Beryn.
15) When we learn a new type of magic, we unlock a book in the library to read that teaches more on the topic. Possibly cost gold to acquire.
16) After helping the Sage, they provide us with additional quests, based on what skills we possess. For example, when we learn a magic type, they send us on a quest that raises that magic skill. They also could pay handsomely for a purified mutagen potion. They could also sell us rare magical items, similar in thought to the Black Market dealer, above. Some of them might allow us to circumvent things with a shortcut. ie An enchanted item called the Skeleton Key, lets us get past the Stone Guardians and open the Dwarven Door without doing any of the normal stuff to get it open.
17) Have the option to forge an Elven Greatsword. Takes an Iron Sword and Moon Sword, plus some more mithril, to create the weapon.
18) Have the option to create a Dire Wolf Cape, from the Elves. Grants a large amount of Animal Handling XP.
19) Could use Spring Water, Herbs, and Holy Magic, to create Holy Water. If you dip a weapon or armor into it, it Sanctifies the item, greatly enhancing it. And makes it so that you need 5-10% less power to defeat the next "Demon Assassin" type of foe. As Holy Weapons are especially effective against Demons.
20) Get a quest to return to the first tavern. You are told by the King's health inspector that someone is selling Rat Meat, as Beef, and you are sent to find out who.
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Anywho, wait for the next release. Happy devving.