This skill tree without exotics pretty much does nothing valuable. You can't make consistent use of impact conversion as it has no melee regen. You don't have any health restoration despite having to always be in their face/slamming targets with your melee. You don't have any grenade regen, not that it's a grenade focused class anyways. It's only real neutral game is inertia override, which doesn't help all that much in pve due to its short timer. So pretty much, without skullfort or mk.44 standasides, you have to time your melee more to maximize super benefits, but immediately afterwards if something doesn't die you are going to get shot at or slapped. If it just...restored melee energy on melee hits and kills, and maybe granted like...even more melee damage or something after just picking up ammo (which is still a pretty much worthless perk outside of pvp) it could be ok. But, right now it isn't without exotics and honestly that's kind of disappointing. Definitely the most bland of the new titan skill trees in my opinion.