Hi Diki.
There's nothing wrong with people wanting the same features found in other keyboards added to their own favourite brand.
Ketron's strengths are in producing keyboards that have sounds and styles that are both very good. Beyond that they are trailing very far behind when it comes to core features you would expect that would be standard on every keyboard at this stage.
This is where the Audya stick out. It's their only premium priced keyboard, but it does not have the features to justify the price when compared to what the competition are doing for far less money.
Someone wanting 1GB of RAM in a new and premium priced keyboards is not unreasonable. There are keyboards out there that already have 1GB and are not premium priced keyboards.
A proper sampler with a good amount of RAM is a very important thing. You might not realise just how much so because it's probably not important to you, but anyone who has started using Samples would never be able to turn around now and do without them.
I still think adding a V-Machine or Musebox is the more flexible way of adding sounds, if the arranger's MIDI capabilities are capable of addressing it correctly.
Nothing at all wrong with a V-Machine or Musebox, but the ownership of the problem shouldn't be simply passed onto someone else.
There is no substitute to having the sounds inside the keyboard your playing.
Cheers
James