I don't think I have enough points to do Anarchy and make it all the way down to Sharing is Caring. Perhaps in the future
Here are my current Skill tree settings:
http://www.bl2skills.com/mechromancer.html#055005000000055000050500410050000000
Add a 40% team elemental damage mod with +5 to Wires don't talk, +4 Evil Enchantress, +3 to Shock Storm.
Add a Grounded Bee shield for electrical damage protection and added damage. I Love "Fancy Mathmatics" and "Blood Soaked Shields". With those two skills, that shield is always up and it keeps the damage high.
Add a 30% Shock Damage relic and its an electrical storm with every shot.
This gives me an additional 154% electrical damage. Since Shock damage strikes twice in 2 seconds, The Binary Thunderball Fist gives enemies up to 4x damage if lightning does strike. It's pretty crazy to play. Accuracy doesn't really matter with this build. You can be a poor aim and still lay waste due to the large amount of electrical splash damage most weapons in my build have.
I went after Dexiduous the Invincible for the first time last night with my gunzerker. It took about 30min to get all of the iridium sacrifices, then another 30min to take that spider down.
The trick seems to be related to shooting the bulbous spots on him. After you shoot them all it takes time for more to appear. This makes the entire process extra long. I took him down from the cave near the lodge. If you're in the lodge his corrosive blasts will get you. I had to learn that the hard way.
I was hoping to get a CHOPPER out of this but instead I got a legendary solder class mod. Not bad, but not useful for me.

It's the only class I haven't played the game with!
I highly recommend checking out the Seraph weapon called the "Lead Storm" I grabbed the electrical version. If you can distance yourself from your enemies and create a well aimed arch, shit dies fast! It works fantastic on 3rd dlc enemies while in groups. Every bullet you fire splits into 3 at a distance. It's pretty sweet and I can't wait to try it on some raid bosses.