Nac reality is pic quality got stagnent after D5000, D90, D300s sensor ....just ISO is improving ...and my cam can take ISO 1600 without any issue soo it dont make sense to get a similar DSLR just for better ISO ...
other things like metering and focus points are immeterial in real life....I donno y companies give soo much emphesis of those....you know I mostly use single point focus and point metering ....only in case of landscape i find matrix metering useful...more focus points are needed in wildlife and car races...but then u need big lens to use it.
Now that most nikon canon and third party lenses have motor I find inbody motor also not too useful..it just add on weight
the most important thing I miss is wetherproof body, two dials .....except these my D3100 is no less ...I want better lenses like a nice sigma 10-20mm,nikon 35mm f1.8 and a nikon 300f4+1.4x tc