Agree with the prior ops. It makes no sense upgrading parts any more unless you just really love your current frame or you wear out/break something. “Standards” change so quickly now and even base models are superior to high-end bikes from 2-3 years prior. The only pro I see to upgrading is the experience of wrenching on your own bike and getting the parts that you really want. I upgraded my now 5 year old bike and had a blast doing it, but the cost of the parts caught up to the price of the bike rather quickly. Looking back, I should have saved up a bit more and purchased a model with higher end parts. That way I wouldn’t have gone off the edge with “upgrade-itis” In the end, you will save more money and feel more satisfied. My new bike has all the latest bells and whistles and no need to replace most of the parts (except the seat..it is VERY uncomfortable). My $.02