It depends on what you mean by "end user serviceability". I'm not into fully custom lights, with a custom PCB where I can replace parts on a component level (I also guess that is NOT what you have in mind here), but basic maintenance, sure. The most important thing for me is a replaceable battery.
Even with improved performance, like increased output and longer runtime, and better IP-rating (protection against water and dust ingress), an enclosed, non-replaceable battery is a deal-breaker for me. Except in specific cases, like extremely small form factor (such as my Nitecore Tip key-ring lights).
So a replaceable battery, O-rings and the possibility to grease the threads when needed is something I look for in every light I buy, regardless of price. An easily replaceable LED would be nice (I have a Fenix TK76 I would like to upgrade), but that is typically not possible to do, and not something I have knowledge on how to do or the tools required, so that is not something I factor in.
Even with improved performance, like increased output and longer runtime, and better IP-rating (protection against water and dust ingress), an enclosed, non-replaceable battery is a deal-breaker for me. Except in specific cases, like extremely small form factor (such as my Nitecore Tip key-ring lights).
So a replaceable battery, O-rings and the possibility to grease the threads when needed is something I look for in every light I buy, regardless of price. An easily replaceable LED would be nice (I have a Fenix TK76 I would like to upgrade), but that is typically not possible to do, and not something I have knowledge on how to do or the tools required, so that is not something I factor in.