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This is technically correct, but I imagine it would end up needing to go through Policy Review. When the thread that resulted in the do-nothing Deoxys Camouflage Clause came out, there wasn't an answer given for what we should do with game-specific mechanics when a specific Deoxys form is...
If you did /ignore on the top 500 players for a ladder, you could use this to basically guarantee you never play a high-ranked opponent and instead try to earn wins only against players with lower ELO. We definitely won't implement something that has the potential for ladder manipulation like that.
Here's the order that should happen for that particular interaction: Red Card activates, attacker is forced out, new Pokemon is switched in, Pickpocket activates and steal's the item of the Pokemon forced out by Red Card.
Life Dew seems to be working just fine. It heals 25% HP of the user and its ally in a Double battle. Not sure if you thought it was supposed to do something else.
If you have a replay of behavior you think is mistaken, feel free to share it.
This is actually a server-side bug; Hawlucha really should have been 235 Speed stat. Paralysis is the last Speed modifier applied. Fixed in https://github.com/smogon/pokemon-showdown/commit/5d8be885c69f29270bb8eb6b74adea7cef92f91f