We're not going to go over all the shoulda, coulda and woulda's. By the time you've tried to set up a nasty plot AND an agility, your Pikachu would most likely be dead or countered by most teams. Pikachu is not viable in the current meta, as there are many alternatives to choose from... using a double set up sweeper Pikachu is just going the extra mile for something that will most likely never, ever happen.
<+chieliee> .tell chielieee HELLO MYSELF
<skybot> chieliee: I'll pass that along.
* chieliee is now known as chielieee
<+chielieee> sup brah