First of all, I want to say I really appreciate all the hard work you put into this amazing software. This is my first post here, and I'm sorry that it's a little bit critical.
Currently exploring a lot of features, I'm not new to networking, but new to OPNsense.
I just wanted to provide the feedback that I found the current (not legacy) IPSec configuration to be unintuitive. I tried to set up a route-based tunnel to a Palo Alto Networks firewall for an hour or so, was frustrated with the experience; already started to troubleshoot log files, then decided to try it in the "Tunnel Settings [legacy]" tab (that I also never used before), and the tunnel was up in 5 minutes. I think the documentation and web UI help is really helpful in other parts of OPNSense, but with IPSec tunnels, it didn't help much.
I don't know if others experience similar difficulties initially (or if it's a skill issue ^^), but I'd appreciate if the IPSec options could be made more intuitive to use. I'm sure once I configure a tunnel with the new settings successfully it would be more clear, but the current implementation was difficult to grasp for someone who tried to use it for the first time.