When it comes to Melismatic hymns, and people complain of how long and useless it might be to them, I tell them that at the moment, there are too many Coptic geeks who will get rid of these hymns. Until we find a way we can actually put a meaning to these melismatic tunes, I encourage these people to bring spiritual material to read with them. If there's a book about lent, or holy week, or even the Bible or praying the Agpeya during this time, all of which are spiritually edifying during a time when the chanters spend their 10 minutes on a sentence.
I know a friend of mine though who tells me the monks of a certain monastery in Egypt have found spiritual meaning in the melismatic tunes, and that these long tunes tell a story that one can contemplate as he/she is chanting them. It would be amazing if one can put these monastic understandings of the hymns into writing, or in youtube presentations. Rather than mindless memorization of these tunes, one can learn the hymns with meditation to quickly memorize them and appreciate them more.
Until then, whenever the chanters chant in Arabic or Melismatic tunes where I won't understand them, then I pull out my spiritual book that I brought with me.