wow impressive how much though you give this
1. if you take all rubees and talents it about 20-24 sek i think but yeah the damage is pretty low and its just to start up the rotation but you know flash lightning is instant so use it
but in pvp boar blow is pretty nice
2. well yeah its the melee version of vortex and you will need it and the damage of it will rise with every static stack but well really its crappy damage
the only purpose is probably a ability to get rid of your static
why get rid of it? well static stacks increase your lightning damage by i think 3% per stack but like this it will just push your flash lighning cuz you dont use vortex so its a bit wastet
what you want are combat wit stacks (the melee version of static ones) which increase your physical damage by 3% per stack
thats why you should start you very first rotation with boar blow to start combat wit stacks (if you start with flash then static ones will be generatet except you already have combat wit)
well wow this sounds confusing i hope you get what i want here ;D
3. well its an aoe yeah and i saw it hitting with over 800k sometimes so the damage is acceptable but i still never use it cause its using way too much energy, takes to long to hit all enemys and is weaker compared to other skills
cause lets be real there are 2 types of aoe fights
a) the short trash grp where you can be happy if you have 2,5 sek to cast chain lightning (cuz of damn scouts -.-)
b) or the longer trash running arounds in astral and stuff here you will maximise your aoe damage by applying flash lightning and grab on every target so it has open wounds (open wounds will be your main damage then) and then hold your aoe on cd (chain lightning and maybe shaman flame) and try to keep open wounds on all targets all the time like this you can even match up scout dps over time(well until your pet is empty)
hope i could help