i just work for the big O. they have kept me working for 10 years without bouncing a check but ill stand by my union brothers anywhere. we joke the reason otis gets a few cents more on our locals travel agreement is because we have to wear the flashy green pants.
i personally feel otis engineers a lot of good stuff and some flops just like any other company. agreed if you are only changing a couple of buttons the modules work. the jobs i have done like this were for ADA upgrades with the intention to do a mod in a few years.
