Rate my Rain Team (OU)!

Question

Here it is:

Politoed @ Sitrus Berry
Trait: Drizzle
Bold Nature
Evs: 252 Sp. Atk / 252 HP / 4 Spe
-Protect
-Toxic
-Scald
-Ice Beam

Pretty simple: Toxic, stall out with protect, and STAB Scald or Ice Beam anything that comes out.

Swampert @ Swampertite
Trait: Torrent / Swift Swim
Adamant Nature
EVs: 252 HP / 252 Atk / 4 Def
-Earthquake
-Waterfall
-Ice Punch
-Rock Slide

Swampert is abusing the Swift Swim Ability after its Mega Evolution. It can pretty much out-speed any Fire Type that is commonly used in OU. (If I had 252 Spe, I could outspeed Charizard)

Dragalge @ Assault Vest
Trait: Adaptability
Modest Nature
EVs: 252 Sp. Atk / 252 HP / 4 Sp. Def
-Dragon Pulse
-Hydro Pump
-Hidden Power [Fire]
-Sludge Wave

It can take an Ice Beam from a lot of Water-Types, and can take a Rotom-W's HP Ice, as well as Manectric-M's and Zapdos's HP Ice.

Linoone @ Sitrus Berry
Trait: Gluttony
Adamant Nature
EVs: 252 Atk / 252 Spe / 4 Def
-Extreme Speed
-Belly Drum
-Play Rough
-Rain Dance

Rain Dance is there pretty much for no reason other than when Linoone is at low HP. Linoone is pretty frail with a weak 61 Def and Sp. Def, but can pretty much outspeed anything with 252 Spe EVs.

Ludicolo @ Leftovers
Trait: Rain Dish
Bold Nature
EVs: 252 Def / 252 HP / 4 Sp. Atk
-Scald
-Leech Seed
-Protect
-Rain Dance

Ludicolo takes advantage of its awesome Ability, Rain Dish. With Leftovers and Leech Seed up, it gets 24% of its HP up Every Turn!

Gyarados (M) @ Lum Berry
Trait: Intimidate
Impish Nature
EVs: 252 Def / 252 Atk / 4 HP
-Waterfall
-Taunt
-Thunder Wave
-Earthquake

So.. Well, I've won a lot of matches, but have lost a few matches. Have any suggestions? Please comment on them below! Thank you!

Comments

Linoone is useless imo. You should replace it by Kingdra. It gets Swift Swim so it outspeeds almost the whole tier and some boosted slower pokemon like Scarf Magnezone or +2 Ampharos. Ludicolo should also use Swift Swim, that makes it very offensive. Use a bulkier EV spread for Politoed because you need it alive for it brings rain to your team. I recommend Ferrothorn > Gyarados for its awesome synergy in rain team, as well as ability to Thunder Wave like Gyarados and moreover, to set hazards up for easing a sweep.
Dragalge looks awesome, frankly, but I think an electric-type would be more functional to abuse rain. Maybe Thundurus.
Sorry for having butchered the team btw :/
(what I gave you is offensive rain; if you want to stay defensive, tell me so in order to get a proper rate. Offensive rain is the rain playstyle I see the most and probably the best, hence I recommend it.)