mycroft, on 2024-September-14, 11:32, said:
It would be legal Open/+ Chart for those who Alert their 2♣ openers (because they are not Very Strong). It is Average, because it is rule of 19 (rule of 20 even).
For me under our rules it would depend upon the possible alternative responses (if any) other than 2♦: if they could show strength and suggest a suit headed by Ace then all fine and dandy without any alert, just the usual announcement.