Here is how to fix the lag train and allow this horribly effective tactic to be dealt with.
The essence of the bomb train problem is not the players themselves, it is not them using glitchy skills etc to be invincible and deliberately lag out the server and ruin the pvp experience. The facts are that it is a stupidly efficient tactic that is personally not the way I envisaged PVP
Whatever your opinion on trains, the consequence of 20 people all standing tightly together and spamming aoe causes lag and creates a ridiculously OP group.
There are two ways to kill a bomb group - Firstly - The problematic way: Sheer numbers and siege whilst standing on top of each other and bombing. This, as many have seen causes massive lag and ruins PVP for everyone.
The second way is to cause the group to become less stacked. Consequently people get picked off at the back of the train. The problem is this though.
The better of the bomb groups all slot IMMOVABLE - Allowing the group to not get disrupted leaving only the stupid laggy way of killing them as an option.
If the group did not all run immovable the bomb train can be broken up effectively with volcanic runes, slows, dk leap ultimate, fear and a whole host of other abilities that would allow for the group to be scattered and picked off.
I genuinely think that if armour skills could only be used by wearing 5 pieces of the armour type then it would fix this bomb train problem and lots else in pvp.
There is no logical reason why 7/7 light armour wearers should have access to immovable. Otherwise the argument could be why cant i use impulse with a S+B? Ive learnt the skill so why cant I use it.
Ummm, obviously because,
Impulse: Staff skill/Requires staff
Immovable: Heavy Armour Skill/Requires Heavy Armour. (Should do anyway xd)
This seems so obvious to me.
I promise you Zenimax. Make armour skill require 5 pieces of the armour type to be worn to wear and you will solve a host of problems over night.
(Am now preparing for response comments QQ'ing because they run immovable and enjoy being OP)
Please try and look at this objectively:
Impulse: Staff skill/Requires staff
Immovable: Heavy Armour Skill/Requires Heavy Armour. (Should do anyway xd)