Patches: These are all cool but I think the vitality stim patch needs a duration boost for the same reason v-202 and Ex-D7 did (though maybe consider making them not stackable with combat stims or something because woah). Also, the vitality patch should be usable without needing to strip down - combined with its short duration that makes it pretty hard to use. Vitality stim patches could also use a price reduction. The other ones are fine as-is I think.
It'd be neat if VS employees could make the patches at special stations in their tower. It makes sense that they wouldn't be something someone could make without the right kind of lab so there'd be a reason to maybe try to lean on the corpies for special drugs.