Lara Croft is an evasive, speedy, and crit-based Water ranged damage dealer. With 3 different yet similar jobs, she does end up fulfilling the role of a ranged damage dealer quite nicely. Being able to get up to +3 range, having the Reflex counter ability, and the benefits of the main job abilities which gives her some high evasion plus missile/defense piercing rate and a phys barrier break.
She has very high evasion through her passive and Double Bullet, and very high crit rate through her stats + her signature weapon Laras Dual Pistols. With some proper gear and vc setup, she can reach alarmingly high levels of them. Main downside to all this is that she only has 1 area attack, and it's Barrage from ranger sub job.
You can build a full mono water missile units since Viktora (Winter) and Creysse exists, and she kind of works well with Tidus since he's also speed and crit based water unit.
She has Sharpshoot in Ranger subjob, and is water. Also has high luck, passive EVA-Up a VC that gives 35% luck as well as missile attack, and can also use Niv'lu's TMR which gives 15 evade and the large aoe Evasion buff. One of her attack skills is also a (L) 2-hit which raises her evasion. I wouldn't count her out! Sure, Cloud and Frederika can most likely delete her but there's always a counter!