its so funny when people expect system alters to be distinct and obvious. like what do you want, a magic girl transformation?
Just putting this out here in case it might be of some use to folks: Many folk under the alterhuman umbrella do not experience species dysphoria, supernumerary limbs, or exomemories. You don’t HAVE to have had experienced these things in order to be alterhuman, even if they are common alterhuman experiences.
Please don’t discredit or doubt yourself based purely on lacking these experiences.