my dng is rusty but i think i have an opinion on this
Are becomings always = to nomadic thinking/schizoanalysis? As Deleuze and Guattari explain, the process of "becoming-" is not one of imitation or analogy, it is generative of a new way of being that is a function of influences rather than resemblances. (http://www.rhizomes.net/issue5/poke/glossary.html)
i don't think that becomings are always a result of or result in or are equal to nomadic thinking and schizoanalysis. there's definitely non-nomadic ways of becoming -- becoming-fascist, or becoming-anti-nomadic or basically just becoming-anti-Deleuzian or pro-capitalist. when becoming, you move from one group to another because of the second group rather than the first -- the ideas of capitalism or fascism are appealing themselves, and thus pull you into their grasp from your original location of moderate or liberal or socialist or whatever you are. however, i think that a lot of becomings are results of nomadic thinking and schizoanalysis -- by thinking for yourself and agreeing that everyone should be equal or everyone should have an equal opportunity, you think nomadically and understand the way that capitalism forces you into a striated existence, etc
Can a subject engage in becomings and still be striated?
i think that the above answers this as well - you can move along striations or re-striate yourself through becoming
Are Nietzschean becomings micro-fascist, therefore?
i have no idea about this one so hopefully the other posters did/will do a good job of answering this for me