Currently confirmed super-Earths and sub-Neptunes plotted as a function of stellar magnitude (K) and emission flux of the planet at 9 µm. The flux ratio here represents baseline emission modelled with dayside redistribution (ƒ = 0.667), which is not affected by absorbing species. 9 µm is the wavelength where the largest SiO feature is expected to manifest. A selection of favourable targets show PANDEXO simulated noise for the MIRI LRS instrument with 20 h of observation time, binned to R = 10.