I'd rather have different stages for the game, so yes, that means more quests. The problem with quests is a lack of proper structure. They should be locked behind renown/clan tiers just like workshops are. (right now you can still ask a lord to do a quest for him but he says you are too low renown. I'd like if the quest wouldn't show at all in the first place).
So with different requirements, there would have to be more quests. You can make the exclamation mark different colors, too. (Orange! = legendary quests for clan tier 5-6, purple! = difficult/epic quests for clan tiers 3-4, green! = medium quests, can do them beginning at clan tier 1-2, and blue! = beginner quests and can do them at clan tier 0, so from the very beginning). Their rewards and difficulty would of course increase based on the tier they are at, there would be different types of quests for each tier.
The game should in my opinion have more rpg features. Better polished mini-games as well. The more things to do in the game = the better, but we just need a better structure for them overall like I mentioned here, because if you just create more and more quests then the sentiment can be like yours: "don't need more of them". If they actually had a better and more clear purpose at every stage of the game, they would be a lot more enjoyable.
Tournaments should also present difficulties based on clan tier just like the quests, because they present the same problem. Why do tournaments in mid/late game? If we had at least 3 tiers of tournament difficulties, there would be a different story. Tier 1-2 = easy combatants (blue color), tier 3-4 = medium (green), and tier 5-6 = challenging (orange or red). Again, more challenging (both armor-wise and skills), more fun, better rewards. I thought of not including the possibility of entering tournaments at tier 0 because then people just jump on farming tournaments, and I think a slower/more immersive/peasant start would make more sense. Like, at least be known a little before being accepted in a tournament. Reworking the arena, or making the arena "a tournament" in itself (so basically removing it from the game), would put it at clan tier 0 and I'd be happy with that. Right now there is literally no purpose for the arena - you make no money, you train skills way too slowly, it's useless... Make it like a tournament in itself where people come and watch you like you're gladiators killing each other, and increase exp gain and also monetary gain (500 for winning, then 1000 for tier 1-2, 2000 for the tier 3-4 tournament, and 4000 for the challenging 5-6 tier, this is just an example and can be adjusted as developers wish.
they'll improve on this.