Some would want triple battery life for a 5mm increase. Some are good with the current handset weight and thickness because they wish to use the weight and thickness 'budget' to add protection in the form of a case. Others have found that a combination of fast charging, common availability of charging points and battery packs have mitigated the need for longer battery life. Clerks charge off their computers, builders charge off their Makita radios.
There's no one size fits all perfectly solution, but there are a few fits most people with a little compromise solutions.