...water...inflexible? well....I would totally say it's not as you wrote because you could do nearly anything with it. Fire is not that flexible but more straigth und uncontrollable (meaning: it ever looks powerful but not pretty (of course beauty is not making an element strong but fire looks kinda dull compared to water.
And I can't understand the strength of earth. Do yu count the dust and sand style to earth? Then I would totally agree but in my opinion earth is dull and inflexible too. Perfect for variation in attack are water, wind and lightning (lightning and water the most) but water can be used in more situations - and I love the element water so I am maybe a "bit" prejudiced ^^ - and lightning would just...well lightning is speed and pure destruction. If you want to push your enemy away lightning would'nt work without physical damage so I think the most flexible element is still water, the most destructive lightning and fire, the strongest earth and wind...well, wind is just a lower version of lightning, isn't it?^^ I would rate it less powerful, less fast and less destructive then lightning...so many words but short list:
1. lightning
2. water (I want to put it first so badly but I want to stay realistic)
3. fire
4. wind
5. earth (earth is so...slow im(a)o)
earth with sand and dust style: (mais kekkei genkai won't make water stronger, hakus bloodline doesn't exist anymore, lightning is first already so the..laser style? (forgot name) won't make anything either so I will just accept dust and sand kekkei genkai
1. lightning
2. earth
3. water
4. fire
5. wind
If you want to discuss my water "love" have fun. I can imagine a thousand ways to beat everyone with water-style
Greetings <3
Alcamea