This is honestly pretty concerning to me since the huge allure of a game like this is the eternal search for the next cool item. Now it is far easier to balance things out by using bland item mods that all give very predictable boosts to core stats. (More damager, faster attacking, more resources, more health, leeching, etc) The tradeoff here is the loot hunt just gets that much less exciting without fun, cool and flashy wildcards out there.
I don't see anything on there that seems to be taking a risk or is remotely flashy. It'd be cool to see more things like "Chance on melee attack to release 3 charged bolts" "Chance to create a spew a slowing sludge when you receive damage" Anything to spice up the predictable stat gains. It's more fun when things add actual visual effects to what you're doing. Unique mods also add the potential to change up how you play the game with what they can do. The charged bolt example? Maybe another mod increases proc rates on items that have them. You can stack that stat with lightning damage for a unique build. The flashy item mods open doors to make the 'basic' stats actually more exciting with how they could potentially interact. ....of course the flipside is this becomes a balance nightmare. But honestly? I'll take an imbalanced game with these possibilities over a balanced game without them.
That is the downside of flashy/unique item mods. They're crazy hard to balance. They suffer in that they're either so worthless compared to a similar item with more basic stat boosts that they are only useful for looking flashy and get benched in favor of more predictable weapons that are outright more powerful. The other issue is a certain unique mod gets to be so powerful that everything else becomes useless compared to it and everyone goes on a singular quest to get an item with it.
...however they're just plain more fun and having them makes hunting for loot that much more exciting everytime you get to identify something that it might have something genuinely cool on it. That anticipation you feel when there's things like that floating in the game goes through the roof. With the more bland stats? You just look for gradually higher numbers and your damage/survivability output go up on a very steady and predictable curve. Yes it's good for balance but it isn't good for just plain fun and an epic feel.
I hope future item design takes some risks like this and even if it means there's some unbalance...I'd rather have something fun and unbalanced than have it perfectly balanced yet devoid of character. The core of the game is a single player experience. There isn't a tight competitive side of things and balance is much more important in any competitive experience. I think some amount of potential imbalance due to items mods is acceptable and might even be fun. It's awesome to have moments in a game like this where you feel like a walking god. I'm sure you can do it with basic mods, but it's just so much more fun to do it with crazier stuff.
WoW already suffers from this a bit. Every item upgrade is a gradual increase in output. Icecrown they shook it up with weapons that had proc effects and honestly those were some of my favorites in the game. However like above, they proved to be extremely hard to balance and some were beyond good while others just sat in the back and rotted to their stat stick counterparts.
Torchlight is another example of a game that got very stale for me because of its itemization. Every item in that game was just basic stat boosts, even the set pieces. I wasn't even really able to finish it since there quickly became zero excitement in finding near gear and I'd gotten all my class's abilities and seen most the locations. I had no desire to keep pushing and getting more and more powerful since it just meant my numbers flying on the screen would slowly get bigger.
Anyway, I have hopes that these are just some initial stats were seeing and as stuff gets fleshed out we'll see cooler items. What I see right now? It isn't exciting me all that much and it worries me since the rest the game looks so incredibly cool.