Guild Wars 2

no expert here, but ur might stacking wont be that high due to the fact that u wont or at least shouldnt spam elixir S to get might. Leaving you with 3 stacks of mights for using and tossing elixir H once. and due to its cooldown you wont get too high by spamming elixir h.
if you take enhanced performance (master explosive) you can get 3 stacks of might when using a healing skill (eventhough they only last 15sec not 20 like hgh). This trait has a 10sec internal cooldown so medkit would be optimal, but i guess id prefer healing turret, due to its cleansing ability. Its 2 cleanses every 19 sec if you explode the turret for extra water field blast finisher combo. Thus leaving you with roughly the same number of might stacks all the time. (i guess it might be a little bit less)

You could simply use the 10 traitpoints from hgh for grandmaster tier in explosives and add enhanced performance, making your bombs a bit stronger due to stats (power/cond duration) and adding the vulnerability on explosions via the minor grandmaster trait.
Also giving you the ability to change cleasing formula .409 to another trait like for example reduced toolkit cooldowns or backpack regenerator etc

I just recently started doing fractals and have only reached lvl 7 so far, but i already did lvl18 with my guild.
I was acutally just thinking about opening a new thread with a similar topic on how to play engi in fractals.
I love being more of a supporter than just Damage dealer. Currently I run
10/30/0/20/10
Pistol/Shield, healing turret, elixir gun, supply grate. My other two utillites are changing almost every encounter to fit the enemy. Eventhough Elixir U’s toolbelt is prop my favorite one.
Concerning stats I am just starting to get my exotics so I’m a bit clueless on that part. Thinking rabid or maybe something with healing power but that doenst scale too good i supose.

Sorry for any language mistakes, english isnt my mother tongue

I think it is interesting that you say it is redundant to have 4 stun breakers. Because we dont need that many.
I look at it from a different point of view: we have 4 skills which (also due to the toolbelt) provide different abilities but ALSO grant us the possibility to use them as stun breaker.
-Elixir R’s revival field is awesome, for solo and especially for teamplay
-Elixir S is nice in pvp because its toss increases your (team’s) chance on finishing somebody
-Goggles give you nice single target debuff
-Boots give you a blast finisher

I wouldnt say that they are redundant, they might overlap b/c of the fact they all break stun but thats not all they do. Depending on your preference and your skills/strategy one of those 4 skills might be perfect whereas the others arent.