However these items are mandatory for any meaningful IFR flight i:e instrument departure from instrument airport to instrument arrival at another instrument airport.
On an IMC rating this is often not possible anyway due to most airfields with an instrument arrival being in CAS. Much more realistic is departing from a field with a 500ft or so cloudbase and low clouds over the hills, heading for a field with decent(ish) wx. In these circumstances you will rarely use an ADF and as said, with a GPS you can also get away without DME.
