NMEA 2000 networks are part of any connected boat, and can be problematic by nature of their design. Troubleshooting an N2K network can be done very easily and cheaply, or you can use more advanced tools.
Servers are more common on boats today than ever before. Having some sort of system to run SignalK, a dedicated alerting system, or some other service has become just as integral as having a chart plotter or VHF radio.
weBoost released the Drive Reach recently which is a more powerful and refined version of the venerable Drive 4G-X, the gold standard for cellular amplifiers since 2014. I have been using mine for a few months, and have some observations
Rendezvous came with a decent power system which I had hoped to use for a year before upgrading. However, performance and other problems cropped up in the first few months of using it, so I moved this project earlier in the list and jumped in.
Having a reliable setup has always been one of my top goals, usually leveraging several technologies. Rendezvous has a similar setup to some of my other boats, but with some modifications and improvements.