That is true, there's less content than in 0.15 (or so it may look) and the update from 0.10 to 0.15 took 2 months instead of 4. I did feel the 0.18 could use more events but it's been 4 months already and I didn't want to delay it indefinitely.
That said, things in development aren't as easy as they may seem. The battle minigame took me about a month to do, or at the very least a few weeks. Spells, spell effects, user interface, mana for monsters, spells for monsters. Then fixing the said things after 1 minor change broke everything. Exp and level up scripts, monster loot formulas, crafting, fixing potions, adding locations, monsters to locations, rewards for completing them. Dungeon, buff and inventory screens also took me longer than I wish they had. The map has been reworked which also took 2-3 days. It adds up.
It's things that are in the game but you don't really see them or pay attention to. The 0.18 version also included a few reworks. Think I've redone +/- 5 events.
Last factor in number of events is my normal life. I still work a day to day job and can only work on the game in spare time which is after work or on the weekend.
I'm by no means whinging or complaining. Simply explaining in detail. I understand what you're saying and where you're coming from with this.
All that said. With the groundwork on many UI elements and scripts done I'm hoping work will progress smoother.