Making Warjack/Warbeast load outs in the app is so much fun! My reasons for not jumping in yet are mostly time (babies will do that), but I love mucking around with the myriad options available to each chassis.
Even units! I love the unit concepts like Winter Korps Infantry and the new Brineblood multi-wound unit that can become wildly different units with the attachment options.
No question here, just really impressed with the design space direction PP has taken with Mk4 and am excited to see more.