I moved from HC2 after 4 years of completely automated home. Dont regret it. Here are some information to your concerns:
Which prevents me from switching to the “Homey” at the moment:
1.) Again and again complaints about the small range, especially with Z-Wave (should probably not be a problem with a reasonable mesh).
I didn’t have problem of reaching devices, however most of devices used mesh intensively. After antenna mod, it was improved significantly (direct connections to Homey. Its hard to compare it with Fibaro, because Fibaro is not offering you view on the mesh and devices like Homey does.
Exclude and include all modules (is a necessity).
Yes, but if you switch to new system, than its good to make clean install and do everything from scratch in my opinion.
No possibility to update the firmware of the modules.
Honestly, why do you need it, if module works as expected?
Can you already make a statement about point 1?
Already mentioned above
Have you deinstalled all modules? Or did you go from module to module with an extension cable or a power bank with the “Homey”?
Best way is to connect Homey to powerbank and include devices nearby. You don’t need to deinstall fibaro modules, you can triple press switch attached to the module without deinstallation for remove/inclusion process. You dont need to remove it from HC2 as well, just remove it in Homey during installation process and do factory reset to HC before you sell it.
How critical are you about point 3? Do you have a practicable solution?
If module works, I don’t see a reason to update it.
Good luck on switching to Homey