Rebalancing Needed ?
With the new expansion looming in the distance, I think now is a good time to assess the state of the game.
Specifically Nightmare Mode and how certain characters or playstyles struggle to varying degrees.
I think we can all agree that the Engineer is just a bad time on either map. Structures as a whole really suffer from the inflated enemy stats, and I find it kind of bizarre that Wrenches still don't scale off Engineering. At least for the Engineer specifically, I think their passive should be doubled to +100% Engineering modifications, because the only other option would be to have Damage % apply to structures and that would have much more dire, far-reaching consequences. Changing Improved Tools to a Tier 2 item would also help tremendously.
The Apprentice is another character who IMO struggles quite badly despite otherwise being one of the strongest characters in the roster due to all the free damage. Mitigating the health loss on D5 is pretty doable, possibly even too easy but on Nightmare mode you really feel it.
And then there's characters like The Baby and Technomage who have potentially insane late game scaling but are crippled by the increased level up requirements. I've never been a fan of that to begin with and feel it should be removed from the game.
You can overcome an XP gain penalty as some characters have. There's nothing you can do about the baseline XP needed to level up being increased and increasing exponentially with every level up.
As for things I would love to see added or changed, I think the Scope should be changed to a Tier 3 Unique item that adds Range scaling to your weapons. It's a pretty garbage item as is that even most ranged builds avoid because of the attack speed penalty and high cost.
I would really love to see a Pyromancer that scales burning damage with their passive, and burning damage changed to finally stack (or at least an item that allows it to) and maybe even a new Tier 4 item that allows burning to Crit.
It would be neat to have a weapon that scales off Regeneration since we have at least one for every other defensive stat.
And last but not least, a custom game option of some kind similar to what Slay the Spire had, where you can add all kinds of stipulations both positive and negative and create customized runs, like starting off with a random Tier 3-4 item or Pufferfish enemies only etc.