Do you think in the future Mirroless cameras will replace DSLR cameras ?

[BrianV]

For Infrared work: Liveview is really, really nice and mirrorless cameras have a big advantage over DSLR's. Using adapters allows use of legacy lenses made for IR work, such as those with extra-low dispersion glass and calcium fluorite optics. No need to correct the focus via the IR index of a lens.