Hey there Hellfire my buddy

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Maybe your focussing to much about this as if the standalone version would have had to have had the exact same functionality as the VST version. Apart from a couple of complete noobs I dont think anyone would have expected a Hybrid MPC to basically be a fully fledged Daw in stand alone mode.
Akai could have made a hybrid machine easily enough imo. In fact I will wager a bet this was seriously on the cards at one point if you consider the design of the Ren compared to the Studio version.
Stand alone mode could have had the same capability as a number of MPCs but would have probably been a combination of the best aspects of various models. Lets say it had 64mb ram standard expandable to 512 or more (ram is very cheap these days). It has an enhanced 4000/5000 type Sequencer, 64 or 128 note polyphony, and had multitimbral functionality. It had some FX, nothing OTT, and the ability to filter any sound. Nothing to complex but more than enough to make tunes and beats. Hardly any research and development costs would have gone in to that side of it becasue they already have the groundwork done. But this Hybrid would have been able to do a lot more by linking to the computer at the same time to give on screen sequencer display, sample editing, instant file transfer etc. Stuff that couldnt work in this mode such as VSTs would be grayed out.
Big deal I say...But even then a workaround was possible such as a firewire audio interface like the Allen+Heath Zedr16 and Mackie Onyx so your hardware Ren/Hybrid tracks could be sent to separate channels on your Daw. Voila you can go to town on your VSTs. Once the track is done you can switch to VST mode, transfer the samples and sequence data at the click of a switch and your golden. The technology is there for this, its nothing new.
There would have been an extra cost. Lets call it Renaissance XL and lets say it was going to be $700 more than the controller only version. So whats that, $15/1600 all in. I definitely don't think that's out of reach for most when you consider the price of a Tempest or Machine Drum as well as tons of other gear out there. So, they could have had three versions.
A hybrid version would have pleased a lot of people out there and it would have been a very unique product. I don't think any of us should underestimate the desire for many to just switch on a piece of hardware and start working without the need for a computer. This is one of the major strengths of any MPC.