Originally posted by elg If all camera flash memory is used for various functions and features, then this is a fact that any additional feature requiring more flash memory is impossible to implement (unless larger parts of firmware are re-written and optimized to reduce that memory usage... which is expensive) in the given camera, as it is hardware issue then.
This is, of course, true. However, it is based on the assumption that every last byte of flash memory is allocated already.
I've been in IT since 1972 and I've done software developement for both general purpose computers and embedded systems. I have yet to see a system in which every single byte of memory is being used.
In my experience, the hardware guys tell the software guys how much memory they're going to have to work with. If the software guys start getting close to running out of memory, they go back to the hardware guys and product planners and tell them to increase the memory or decide which features to omit. This is especially true today, when memory is relatively cheap.
Besides, we're probably talking about a future camera, not a firmware upgrade to any current or past model. So, the memory size of such a putative future camera hasn't been decided, yet.
We're all discussing something we really know nothing about. We don't know how much flash memory is in the K-5, for instance. Nor do we know if the memory size on a future camera could be increased by simply substituting a physically identical chip, with more capacity (easy) or if additional memory chips would be needed on the motherboard (hard).
Getting back to the OP's original suggestion, I think it is a good idea. However, it is an idea that won't sell very many cameras, so it will not be given a high-priority by the product planners at Pentax.
Another good idea that I think will never happen: display actual shutter count on the back LCD. We get a thread about once a week, from some newbie, asking how to display the shutter count. The camera already has the count stored in flash memory. We're not asking for the ability to change the shutter count. Displaying it would be trivial. But, it ain't gonna happen.