Much like resetting skills and getting back skill points, I am suggesting that the devs should allow the players to reset their talent tree via some consumable, and get back knowledge points. Sometimes we make wrong decisions or level up talents that are required at that time, but later on they become less important or useless (cap reached for a stat).
Challenges to this suggestion:
1. Creating a consumable similar to book of oblivion. - Easy enough for devs, and maybe give each player a free consumable once they release it. And also make it available in mshop.
2. Redeeming knowledge points - There could be a case where the restored knowledge points exceed the maximum limit (75k as of today). Hence the reset action can store overflown knowledge points into consumable pots and send them as gift to the player (to avoid bag full scenario). And allow using the pot only if the current knowledge is below the limit. User caution and responsibility required.
3. Scope - This feature must cover the character talent tree and may also cover the underwater territory talent tree.
Hope you like the suggestion and implement it in the next update or as soon as possible.