Caseless ammunition: Future or technical gimmick?

Jim Schatz, who worked for Heckler and Koch from 1986 to 2006, has compiled his experiences with caseless ammunition as part of the G11 project into a presentation. He particularly addresses the challenges associated with its use. Here are the key points summarized briefly for you:

+ Weight reduction: An M16 A2 with 240 rounds (5.56x45mm) weighs as much as a G11 with 550 rounds (4.73x33mm)
+ Size reduction: Caseless ammunition requires less space, making it lighter and cheaper to transport
+ Increased rate of fire: Eliminating the ejection process allows for higher rates of fire
+ No case: Materials normally used for casings can be put to other uses, eliminating the need to collect casings

– Difficult sealing: The absence of a case makes sealing the chamber much more difficult
– Sensitive ammunition: Handling the rounds too roughly can render them useless
– Heat: Without a casing to act as a heat sink, the mechanism becomes too hot to continue firing after 210 shots
– Technical complexity: Firearms for caseless ammunition are significantly more complex

— Propellant fragments: Incomplete combustion can leave residue in the chamber, causing malfunctions
— Misfires: It is difficult to remove faulty ammunition from the chamber without a standard ejection process
— Sealing part 2: Inadequate chamber sealing can cause the escaping gases to damage the firearm

Overall, Jim Schatz concludes that while caseless ammunition has advantages, it is not suitable for harsh field use. Do you agree with this assessment, or do you have a different opinion?