To complexify the skills a bit like in BL2, I’m going to put a middle 5-point skill in the first 3 tiers of each tree.
INFANTRY TREE
Tier 1: GENERALIST (0/5)
+15% Weapon Swap Speed
Tier 2: FRAG 0 (0/5)
An enemy damaged by one of your grenades takes +10% more damage from all sources for the next 10 seconds.
Tier 3: PREPARED RESPONSE (0/5)
+10% Shotgun damage but reload time for Shotguns is 10% slower.
SUPPORT TREE
Tier 1: BACKUP PLAN (0/5)
Your turret leaves behind 1 copy of your grenade when it is destroyed.
Tier 2: RESOURCEFULNESS (0/5)
Killing an enemy regenerates 1 bullet for all bullet-using weapons.
Tier 3: MOVE OUT (0/5)
+5% Gun Damage against a damaged enemy.
MEDIC TREE
Tier 1: BROTHERHOOD (0/5)
+10% Fight for Your Life Time ; +10% Speed in Reviving an Ally
Tier 2: RESCUE (0/5)
+50% Movement Speed while an Ally is in Fight For Your Life
Reviving an ally, or yourself, adds 10 seconds of cooldown to your turret.
Tier 3: COMPOSURE (0/5)
+8% Gun Accuracy and +7% Gun Damage while health is not damaged.