Great to hear that you are planning new expansions.
WEAPONS:
I don't mind giving you some of my personal feedback if it helps in any way. I would say the reason I requested more swords is mostly because I can't have 'Greatsword' and 'Sword' as totally separate weapon types for different classes simply because there aren't enough unique designs for each on their own, but together it makes just enough that I needed one combined type of "Swords" for my game. This includes using some of the recolors from the fantasy base set. Some colours I can't or won't use, which is understandable and expected. I did manage, however, to do some fairly decent recolors for some spears and swords. So I think more variety of both types of swords might be helpful because right now I have a total of 28 swords in my database that I will use, and only 'Sword' and 'Greatsword' combined as one type when I would prefer to have two types instead. I would need closer to 40 with each type (if it were a perfect world, of course).
For spears and daggers, we can definitely use more of those as well. Maybe a weapon type 2 set and an armour type 2 set could rectify some of this stuff?
Same thing for guns. 17 is not quite enough (especially since the price is borderline unaffordable for me for each pack). I can't just buy every single pack, like some for a few icons. I can maybe buy almost all of them, but I have to make a sacrifice somewhere. If there was a pack that contained 20 guns, 20 spears, 20 daggers, 20 greatswords, and 20 swords, then I'm likely to suck it up and purchase it even at full price.
All though the pack with the recolours was useful, overall unique designs are preferable, and I would do the recolours myself using your icon colour palettes if I wanted another version of one. I found myself more than not using a recolor from the base fantasy pack just because I didn't have a unique design for my new weapon.
ARMOURS:
YOU: The armor & clothing topic pops up constantly, so I think the first armor/equipment set simply was not enough?
I would say that when it comes to unique designs, you can almost never have enough because there are simply so many RPGs that are on epic scales that would require not only multiple different armours but armour types as well. Combine this with the fact that you usually need armour, helmet, gloves, and boots for all heavy and light armour's, and it could take a while.
YOU: Is there anything which you don't like about this set?
I personally didn't like the addition of the samurai and ninja armour simply because now I don't have enough of that type of armour to give to a special class called "Ninja" or "Samurai," and therefore it does not have much use to me. Also, I do think having a lack of focus on which 'type' of armour to include in the pack had an impact on this set. It would be much more useful and have more armour included if it were based on heavy armour, light armour, or magic armour instead, and it would include 100 icons. If it was a straight armour set for heavy, let's say. It would be 25 gauntlets, 25 armours, 25 boots, and 25 helmets. This would cover the vast majority of people's games using heavy armour types, especially if you included recolors we can do ourselves or armour pieces you have already made for us.
YOU: Are there some pieces of gear you miss specifically?
Half Plate
Full Plate
https://dragon-quest.org/wiki/List_of_armor_in_Dragon_Quest_I
Sometimes you just have to make things up. Here's a really good reference page:
https://www.woodus.com/den/games/dq9ds/armor.php
Platinum Armour
Legendary Armour
Dragon Mail
Gigasteel
Bronze
To name a few that stand out. Also, some I don't have reference to but some of the icon designs can use references from other icons above from woodus.com.
Dark Knight Armour(REF:Metal Slime Armour)
Blood Knight Armour(REF:Mythical Armour)
Ethereal Armour
Enchanted Armour(REF: Enchanted Armour)
Valkyrie Heavy Armour(REF:Veteran's Helm)
Valkyrie Light Armour
Mythril Armour(REF:Mythril Helm)
Scale Armour(REF:Scale Armour)
Woah, that was a lot of typing. I hope that I was clear and concise and that this helps, cheers.