He mentioned that we are missing an entire radar mode that is specific to the F-16, ULS. That most certainly belongs on the list as it is a viper feature.
DTS is definitely not a waste of time, there are many things the DTS provides. The first thing is PGCAS which I don't recall if we have currently. The second is Database Terrain Cueing which is similar-ish to TFR but instead of it using radar it uses the terrain database to cue you to stay X feet above the terrain model, its not as accurate as TFR because your relying on the quality of terrain model loaded so you should only use it in VMC but it still a great feature. In addition, DTS provides obstacle warnings if the system determines your not going to overly an obstacle by at least 500ft by default. And I highly disagree with the notion that introducing error-correcting systems is useless, if you want to simulate the viper's navigation system as realistic as possible you have to model the ENTIRE THING, including the parts that degrade and upgrade the navigation quality, not just the degradations or else you have an incomplete simulation. Also, to your comment about the JDAM threads, the problem that was being discussed in the JDAM thread is that BOC isn't working properly so what should be the most accurate mode is actually the LEAST accurate in dcs.
In the case of Expanded DL, this isn't a DCS ecosystem limitation. We should be able to HSD or FCR cursor over L-16 tracks and see more info about them which the hornet can already do so its NOT a dcs limitation
Here are some very useful hotas commands that we are missing; Cursor Enable should switch between POS/HAS/DL delivery mode, Cage/Uncage button should cycle target isolate modes but those arent implemented for the HARM, in POS submode the pinkey switch should rotate between PB, EOM, RUK submodes, TMS Right while In POS or DL should steps the threats in the threat table.