Reunion

I like this, especially the variable part. it should be also added outside of the 'logic space' and to quickly assign it you can drag variables from a special tab towards the equipment. This will only work for triggers, everything else you'll have to manually assign by typing it. Following this, new way To assign keyboard controls is to press enter when you're done so the game can tell if you're using a variable or a key for that.

A tier of upgrades that should come after the branch that should come after the 'debuff' branches, such as the - damage, or - accuracy branches. What these will do is take away from some stats but boost some others at a rate far better than any to make up for it. This allows further specialization, such as a rapid-fire blaster with the +50% firerate, +100% firerate and a new upgrade: +150% firerate but reduces accuracy, damage, or velocity. Or a 'heavy projectile' upgrade that reduces velocity but increases damage, which can be used to make hard hitting weapons. A special one I can think of could be called overclock, in which the weapon gains massive dps boost but the weapon will generate heat + slow down drastically as it gets hot, ideal for boom and zoom vehicles that likes burst damage. Tldr new upgrade types which debuff a few stats but adds a lot to another few. Good for specialization.