I refuse to pass judgment on Exploud purely because I have very little recent experience, but I know that
hilarious has had a successful team with np pass togetic and exploud, so he might be qualified to.
However, I have used Duggy a LOT lately, and I have to say that its current ranking is criminally low considering its effect on the metagame. Although it appears initially to be nothing more than a cheap gimmick, the playstyle that Dugtrio singlehandedly creates is effective to say the least, and given that Dugtrio is necessary for this playstyle to exist, it needs to be ranked far higher.
I'll come at this from the basis of my most recent Dugtrio team which, while it may not be the best, sort of exemplifies the playstyle. I ran Baton Pass Umbreon and Volt Switch Forretress along with Banded Dugtrio to lure, trap, and eliminate threats like Banded Heracross, AV Entei, Lucario, Infernape, Band Victini, LO Darmanitan, Nidoking, Nidoqueen, Jirachi, and of course the more niche situations of weakened offensive and defensive mons.
What this playstyle / core allowed me to do was to run mons that were traditionally countered or checked by these threats far more effectively. I made full use of Nasty Plot Infernape and Offensive QD Volc (when it was available), and I used these alongside Band Heracross (with Pursuit) to further decrease the list of defensive checks and counters and make a sweep all the more easy.
This team preformed very well. With a relatively generic and probably not-optimal team setup outside of the conceptual core, I managed to get close to 1700 with minimal effort. However, at the same time, Dugtrio is the clearest example of a limiting factor in terms of teambuilding. IF you want build an effective Dugtrio team, you have to be aware of the consequences of Offensive Trapping - you give up a ton of free turns for a multitude of dangerous sweepers to set up (complicated by the fact that Duggy's only real strong move is EQ, which has loads of counterplay). This confines using dugtrio effectively only to teams that are committed to the entire playstyle - teams that can both deter offensive sweepers through momentum and defensive checks and can take advantage of the defensive holes that Dugtrio creates by trapping certain mons.
Dugtrio creates a viable playstyle, and for this it should be ranked far higher than B-. However, its inability to just chuck on any team and the immense amount of support it needs to function correctly as well as the massive loss of momentum that trapping a Pokemon necessarily leads to keeps it out of the highest ranks. Due to its influence on the metagame, it should be given a rank of
A-, or at least B+.