Hey Bafonso,
The MD Morphor adds some features that the MD can't do by itself or which just can't be done on the MD because it's impractical to click so many things in a short period of time.
It reaches from something like CTR-AL to wild modulations which almost sound like audio effects although it's all just MIDI.
@CTR-AL: with bidirectional MIDI in V1.1, you can select tracks on the iPad, say High Tom, Mid Tom, Low Tom, tweak one of them on the MD and all of them are changed simultaneously. For instance, turning the filter knob on one of the toms applies a filter tweak to all three toms, but not all the other tracks on the MD. When using "conventional" CTR-AL (which is one of the greatest features of the MD in my opinion), all tracks are modified, including kicks. This makes CTR-AL difficult to use. My solution is easy and straight-forward, once you have all the MIDI cables plugged in.
Additionally, you can plug an external MIDI controller into the iPad (I use an USB hub plus MIDI merger/splitter). The MD uses quite a lot of CC's and doesn't have an auto track MIDI channel as can be found on OT/A4. With my solution, you just need 8 knobs (e.g., LPD8) and the iPad translates commands from these 8 knobs to MIDI CC and channel needed to tweak a specific track/page.
@effects: just listen to my posts on soundcloud. they don't even use the latest features, where the slider is LFO-modulated. these posts contain enough modulations to even convince long-time MD users
In sum, I think it's a quite sophisticated tool which fills some gaps of the MD. However, if you're completely new to the MD, it might make sense to spend some time just with the MD first and then add the iPad.