I would think only us invested fans would care. Most fans and other people who attend matches won't even realise.
Given the choice between the Arnold method and the Popa method I would take the latter. The desperate public chasing of Volpato and Robertson was a pretty low point. Popa said he wants people who want to play for us because it is an honour (and a well paid international team if you go to a world cup). As long as there is communication with these guys behind the scenes that should be enough.
If Triantis wants to play for Greece, this is his choice, not Greece getting in first. He has every opportunity to play for us, second squad in a row and with Irvine out there is a place up for grabs.
Having said that, unless he was particularly poor or underdone in the previous window, I would have much preferred he received game time.