it is not attention seeking ,to use a partial sub,I would use a minor on the first bar through the tune,and if I was the only accompanist
a minor or A modal then either f or d modal with added 7 c[go on try it].
Wille Johnson used intersting and unusal chords all the time,was he an attention seeker?.
if people didnt experiment,ther would be no progress.
Paul De Grae is a first rate guitarist,and is more highly rated ,than[with respect] any of the other contributors on this forum.