I think the Take5 is aimed more at the beginner rather than the experienced synthesist. Those who, at this time, cannot justify the CAD$5000+ price for a prophet5/10 as their first synth.
I see the Take5 as a higher end competitor to the Minilogue. As much as the Minilogue sounds great the slimkeys are a massive deal breaker for me. the Rev2 8 voice is only a few hundred dollars more, but then I would be hunting for an expansion board sooner rather than later.
This is my impression as well. The Take 5 is geared toward portability... It has one of the P5/10 filters but not the same oscillators, and the difference in oscillator in terms of providing fat vintage tone is very different even between the P5/10 and the P6, despite the vintage knob of the P6. I think that much like the Minilogue, it's one of those synths where much of its tone will come more from the oscillator and FX combinations than the oscillators themselves. Sort of like the old Junos -- only one oscillator and I never heard great things about those DCOs, it was more about what happened to the thinner sound once pushed through the chorus FX.
Ultimately whether a synth goes is regarded long-term as being a great instrument has more to do with what gets done with the synth. If the Take 5 reaches a broad audience (which seems likely given the price point), it could become kind of a defacto stage instrument for a lot of younger musicians... In some ways, it was the less pricey sub-premium synths that helped shape a lot of 80's music. Making them affordable makes it easier for young hopefuls to make music that will be remembered.
I have to say when I listen to the demos, I don't hear much overlap with the P5/10 other than they have in common that Sequential vibe more than, say a Moog vibe or a Roland vibe.
My solution to not suffering the slim keys of the Minilogue was to get the module -- its a great buy -- spectacular sequencer and the whole custom oscillator thing is very useful.