Well 1. Rather hard to offer a way to improve a team when you didn't even offer up what you were looking to improve on in your initial post. What are you struggling against? What have you found to be not pulling its weight? 2. Just because you don't like the answer you're given, doesn't mean...
Pick one. Trick room is already gimmicky enough as it is, wonder room is even gimmickier. The teams that are considered top tier, aren't because they have a strong gimmick. It's because they have strong win conditions no matter the situation.
The win condition of a theoretical double room...
LF 4IV+ spitbacks; G-Ponyta, Larvitar, other Shield exclusives, Stonjourner, HA mons
FT; 4IV+ spitbacks of my own; Isecue(with belly drum and icicle crash), HA Scraggy, HA Eevee (with yawn). Also have a 31/0/31/31/31/0 Quiet Honedge available
Looking for a few things; g-ponyta(preferrably in a moon ball), stonjourner, goomy. Egg moves aren't necessary but won't turn them down either.
FT; 4IV Eiscue in a love ball with Icicle Crash and Belly Drum as egg moves.
LF breedjects, 4IV or lower, not all too concerned about egg moves or what ball is used. A small list of things I'd like; Goomy, Larvitar, G-Ponyta, other shield exclusives.
FT; 4IV breedjects, Honedge, Deino, Bold Rotom, HA Scrafty, and Dreepy