So, I started a new energy weapons character, and just got to level 16. I take the meltdown perk because I am making the"perfect" pure energy weapons character, and figure the AOE damage would be great. However i was slightly dissapointed to see that the effect (although cool) for Meltdown was the same on every gun. Instead of adding a bright green glow to every weapon, regardless of firing mode or colour of energy, I think it would be really cool to see unique effects for each weapon, although honestly just making the effect the same colour as the regular firing mode would satisfy me. Things like the blue beam on the orange Tesla Beaton Cannon are somewhat annoying and could be very easily fixed as well.
On a side note, to all of those wondering weather energy weapons characters are worth it, I can very saftely say: No doubt. I am a very experienced Fallout Player and have got 3 level 30's in NV, A standard guns/sneak char, pure melee and unarmed, and a juggernaut character with maximum DT and a user of guns like the Avenger and AMR. All 3 are extremely powerful, but none of theme could kill an alpha male deathclaw at level 16 with 1 shot on hard difficulty. I was able to accomplish this with the YCS, using max charge rounds and a sneak attack.
So once again to all those wondering if E weps are worth it, the answer is yes. The main idea is to max out perception and luck and choosing the right perks.