I assume you're referring to Liana being unsupported by the developers, right?
To mitigate any potential issues I would suggest the setting the shorter period of inactivity for the primary key around 3 months seems optimal to me. This way either you or haeres can take the necessary actions if needed. It’s hard to imagine something so severe happening in just 3 months that would prevent even unsupported software wallet from managing the funds.
Yes, but isn't it better if features are presented and developed as BIPs so that they can be included (or considered to be included) in the majority of the wallet software out there?
By the way, do they give backups in BIP39 format? If so, I guess you can still get the funds in the future? Or is it transferred to another wallet?
Nevermind, feel free to respond, but I need to do my own research, because I still have made minimal effort to understand how it works.