Right, sorry for that wall of text, I'll start using paragraphs.. However, it'd be funny as hell to see a boss called Wall of Text.
2. Moon-phase based monsters would be really nice. The more randomization in the game, the better it is.. I think. Or at least it won't get boring as soon as the normal Terraria. And of course overdoing is also bad.
3. Yeah, this is more a writer-based job. I think that every game, even an action one, should have at least a bit of lore, it's always adding a bit of depth to our character and generally to the whole world. That diary should have a special slot in your inventory, or just make it accessible as a hotkey or something. Well, if you really think about implementing it, I could help you with that (I mean the lore-based stuff). I'll be having quite a lot of free time in the next 3 following weeks. Of course if you prefer doing it by yourself or something, just say it, I don't mind.
4. No matter how you do it, it'll be a fine addition either way. I actually have no idea how the tile system works, but creating a completely new biome using the existing resources in the game sounds good enough. Maybe adding a new biome on one side of the map, instead of the ocean?
5. Right, The Reverse Realm, I remember it, though I didn't spend a lot of time in there. Well, that's something already. Rework it as a post-moonlord area and it'll be great.
6. Nevermind that idea, sandbox-like games are not so ... compatible with a prestige system, there's too many downsides of that idea. But still, I'm in favour of the idea of some infinite-gameplay, though I have no idea how it would look like. I guess the moon events idea is good enough.
And now a few new, smaller ideas:
7. Could you please make the stack limit bigger ? It's been bugging me in Terraria since the day I started playing it, and I'm pretty sure I'm not the only one with the same thought. I don't know whether it's a lot to code, but I'd be truly grateful for that.
8. Auto-trashing would be also really good to implement. Putting in it items you don't want and they get right into the trashcan. Even while exploring the jungle early game I get a lot of items that are totally useless, and it's really annoying to open your inventory and clean it every 5 minutes.
9. What about adding a better war potion that would boost the spawn rates even more?
10. Right, what about the graveyard biome and Mr. Skulliton? I always liked him, will he ever come back ?
Okay, that'd be all for now. I know some of them aren't exactly connected to the mod but still, those'd be little tweaks that'd make the mod nicer to play. Besides, I think I never told you a few certain words, so I'll do it now - Thank you for creating such an awesome mod for Terraria!