The simpleness of the TW DLC Jet range is a big deal to his majority customer base - you can literally jump into the DLC straight away with a large choice of weapons - Ive flown an Omani Hunter over Israel, A-4A over Dhimar, MirageIII0 / A-4G / A-4K over Iceland for example.
I'm very much in the wait and see for DCS - the sim has a long way to go so I would hope that ED may work on a newer terrain engine, and dynamic campaigns for their next major release - and by that time (2022) there might be some (better) aircraft to fly.
A Vietnam or Israel pack fully supported by the releasing studio, with SAMs, Jets, AI behaviour, Terrain, Campaigns etc would be something I would probably buy.