Nintendo software
Sony hardware
MS controller

or

MS software
Sony hardware
Nintendo controller

Anything but Sony controller. Also, once Scorpio launches I would default to MS hardware.

Nintendo Software
Sony Hardware
Sony con.... CRAP.... Microsoft Controller T_T

Microsoft hardware would do too, as long as Microsoft isn't on games!

Controller: all 3 are fine
Hardware: NOT Nintendo
Software: Playstation

So there's only one possible option for me: PS software / MS hardware / Nintendo controller .

how i am supposed to build an ideal ecosystem without Sony Software and Hardware?

Nintendo Software
PS Hardware
PS4 Controller.

Edit: I know it is not an option but I just can't stand the Xbox Controller. It just never fels right.

Nintendo software (Great IPs)
Microsoft hardware (Not much of a difference between PS, doesn't matter much)
Sony controller (I don't like the Xbox controller)

or

Sony software (Also has great IPs)
Microsoft hardware
Nintendo controller (I love most of Nintendo's controllers, especially the Wii U Pro)

Ps software
Ps hardware and
Microsoft controller 5% over ps only because of battery life. My only disappointment with the ds4. Well that and one of my launch controllers has already gone through a set of analog sticks. I do have one day one xbone controller that drifts real bad. The analog gyros aren't very well made and plastic that holds the left and right click breaks.

Priority for me would be the Microsoft controller (anything but Sony's one anyway)
Then in term of software; Nintendo (nothing can beat Nintendo exclusives :))
And finally only choice for hardware would be Sony but looking right now it would not be that bad

So

Nintendo Software, Sony Hardware, Microsoft Controller

This for me.

PS Hardware, PS Software (assuming all exclusives and not just Sony, if just Sony then MS), Xbox controller.