In reply to Turkey: a new symbol for the lira:
… which Opentype feature would be best
It won’t matter. For the average user it will not be appealing, such niceties. It won’t help the “new logo” arriving in reality.
As long as they don’t sort out this business in terms of the existing LIRA sign, it seems all fairly rediculous to me. To pretend as if “a new sign for the turkish Lira” would have been something to invent at all, this is the initial mistake. And the story goes downhill from than on.