I think if everyone chimed in, you'd get another dozen or so ways to process pipe tobacco. There's no right way, and all your ideas and future ideas, (aside from the crazy expensive aluminum press), are just as valid as any.
I've never gone with the Rikon knife that so many go for because it's ergonomics would make me feel like I'm old and arthritic, and it's bright colour like I should be outfitting a time share rental.
I like the carotte/perique method that
@furryfreek shared. I never thought of doing it vertical like that. Good idea. I do small carottes by hand, maybe 50-100g each. My method is to roll cigar shape, put in plastic bag, wrap with fiberglass tape super tight by hand, let age.
Vacuum sealer works like a press. Make nicely piled stacks, seal. You need to let it sit in bag a week or whatever, but you can easily slice it like plug after. Only difference is it won't be a rectangle.
But you know what my main method is? Scissors. Stainless steel scissors with no silly plastic or bright handles. Take one leaf, leave the stem in, cut it into more manageable length, like you would with green onion, then snip snip snip, viola, enough tobacco for a day.