Guild Wars 2

I ha e all five of my character slots taken up, all with relatively different styles of play so I can have different playfulness by just switching character, instead of having to change skills and traits. I have a warrior, thief, engineer, mesmer and elementalist. My mesmer and my elementalist are my mains and I would say the rest are alts.

These are my builds:
My mesmer is a mantra build http://intothemists.com/guides/2151-furbys_multitasking_mesmer_v20_the_spram_build
My elementalist is a mainly fire build http://intothemists.com/guides/2181-flames_and_friends
My warrior is a condition build http://intothemists.com/guides/1105-master_swordsman
My thief is a stealth build http://intothemists.com/guides/1351-shadow_thief
And my engineer build is a flamethrower one http://intothemists.com/guides/1141-juggernaut_ft_build

These aren’t my builds, they are just the ones I found on into the mists and I like. Do you thin their playstyle work be a lot different or are there some similarities between them? I know its a lot to read through, and if you do I thank you very much, and also do you think they are decent open world pve?