>>22289522Weavile's moves are actually pretty solid. I'd slap a Focus Sash onto it and call it good.
Absol is the obvious Mega. Either an Ice Beam/Fire Blast coverage combo alongside Sucker Punch, Knock Off and Superpower, or a Swords Dance set with the aforementioned physical moves. Houndoom does not go Mega due to being unable to take advantage of Solar Power, given the existing team layout.
Spiritomb needs a solid overhaul - a defensive mon has no business killing itself with ghost-Curse. WoW, Sucker Punch, and RestTalk makes for a solid defensive core, and can disrupt physical offense excellently. Keep Pressure, simply because Protect is used seldom in in-game play by players. Both Leftovers and Sitrus Berry are decent options for items.
Give Houndoom a Life Orb and watch it fuck shit up. Switch out Flamethrower for Fire Blast.
Replace Honchkrow with Defiant SD Bisharp holding an Expert Belt (Houndoom has the LO).
Umbreon needs to go with a Moonlight/Confuse Ray/Sucker Punch/Heal Bell set to act as the cleric.