Adding MIDI is not a bad idea per se but it IS a feature not everyone would use.
The Jens-way of doing things could be compared to Ryan Air business model.You only get the essential then you pay extra for the add ons...
Its not really anything wrong with that but there are ppl who dont always strive for bare minimum of everything.
If this wasnt such a nische market there would be someone else making a more costly version with a bunch of non essential bells and whistles added.
And some ppl would go for the Jens bare bone version and others would gladly spend a few extra bucks for a more feature rich mobo.
It just so happens we dont have a lot of choices anymore. Jens' version will have to do and he happens to prefer the bare bone strategy...