Hey , its strange that nobody suggested this , but what about running a hidden power on breloom to take down a specific counter to him ?
An example of a set that could work :
Techniloom @ life orb
Nature : Naive( +speed , -sp.def)
Ability : Technician
EV's : 252 atk , 252 speed , 4 spa
Moves : mach punch , bullet seed , spore/growth/sworddance/HP ice/eletric/fire
A naive nature is given because he is totally not bulky on the special side , taking up to almost 100 % from even resisted hits. The ev's given sets it at 359 atk , 157 spa and 262 speed , i dont know why but i always prefer to use max speed on breloom.
Mach punch and bullet seed for the obvious reasons , spore for team support , seeing its a lot less valuable this gen with all those pokes that outspeed him , and toxic heal gliscor countering him ,it also offers 2 set up moves. Sword dance for making him a formidable attacking force , and growth is an option to make the hidden power get ko's on certian pokes and make it stronger vs opponents it can only hit 2x supereffective ( like most flyers , it deals more damage then stone edge on staraptor because of intimidate).
The demonstrate what this set is able to do :
Damage HP ICE versus 252hp/252speed gliscor : 80.2% - 94.9% , a certian 2ko , if u invest slightly in spa its a ko , and if you predict right and if gliscors coming in on SR , hes dead meat. Yes im aware that gliscors often outspeed breloom , but its easy to predict when gliscor is coming in ( to absorb the spore for instance) and you hit him for great damage. He cant even outstall your damage with toxic heal when hes running something like max hp/def ( and thus you outspeed)
The hidden power can also be used in the same way to :
HP fire vs 248hp/252 atk/8spe scizor : 79.3% - 93.3% ( tough a lot scizors run speed nowadays and not that much bulky anymore , its easier to get a ko)
Or :
HP electric vs 156HP/72atk/96def/spe184 gyardos( the bulkiest set that is used) : 60.5% - 71.4% , a certain 2ko , even with factoring in leftovers , if gyarados doesnt run hp/spdef and comes in on SR , hes dead meat. If he runs adamant , youll outspeed him by 1 point.
Hp eletric vs physically defensive skarmory : 44.3% - 52.7% , this is where growth comes in , you can growth as skarm will almost always set up on you and then proceed to 2ko , if u want to 2ko skarm with your supereffective hiddenpower , just add 72 SPA ev's for an average damage of 55 %.
I dont know if there are better uses or better alternatives to hidden powers it can use ,but i just wanted to demonstrate the power of a technician boosted hidden power. I can also see running a set like this to kill a counter to fighting type pokemon ( like gliscor) making the way free for a other strong fighter ( like roobushin). Much like the double dragon tactic.