These threads are always pretty interesting for ideas, potential, and discussion. I'll start:
>Lilligant
Stats are already decent, but movepool is utter ass.
Obtains Thunderbolt, Calm Mind, Shadow Ball, Psychic/shock, Dazzling Gleam, Moonblast, Power Gem, etc. etc.
With the use of Sunny Day, she could be a really good Sun user.

>Quagsire
Attack is buffed by 25. Both defenses are buffed by 10. Speed is buffed by 20.
Obtains Avalanche and Venoshock

>Snorlax
Snorlax is getting powercreeped hard.
Raise Special Attack to the same as his normal attack, making him a mixed tank. Defense is also boosted by 25.
Give a new Signature Move that can function as a decent recovery without Rest.

>Parasect
Gains a couple rock moves such as Stone Edge and Rock Slide.
Bonus moves include Earthquake, Night Slash, Wood Hammer, and Power-Up Punch
Speed is buffed by 50, HP is buffed by 20, and Attack is buffed by 10