Current OT is a masterpiece of hardware. Yes it's 5 years old but it's still extremely valid as a workflow and performance tool. I honestly don't think Elektron will make another - why would they ? There's so many other realms to be conquered.
There is already a device on the market that deals with samples, has a touch OLED (atleast I think its OLED .. it looks colourful and bright), has very sensitive nice pads, and can sample, play samples, edit samples etc etc etc It doesn't have an SSD as mentioned by the OP, but I don't think that's really needed in such a device. I think if you do some googling you'll find the one I'm referring to and it's not an iPad
If I was elektron - I wouldn't try and make something that's technologically superior to what they already have. Any company with a long reach, a fat budget, good marketing, and ties with a plant in Asia that can mass produce electronics can make what you suggest. That's simply not the company Elektron is - they make boutique machines meant for the skilled hands of those who prefer love going into a machine over mass produced, assembly-line devices.
I would prefer to see them focus on a niche market of users who appreciate a device that plays like it's an instrument not like ... well .. I'll just say it out loud - What you described above is a computer. Every device made by Elektron has a specific feel and that's what I appreciate about them - I don't care if their direction is guitar pedals, effect processors, or extremely characterful espresso machines ....
I love this forum (kinda LOL) and all the people here, but I'm finding more and more it's suggestions on what Elektron should be doing instead of what we should be doing which is helping/sharing/enhancing what we already have and love. It's a community not a market survey.
peace, love, all good things
(bring on the flames !! hhaha)