What are AEON use use cases? To adopt the use of AEON will mean innovative thinking and collaboration and partnership.
Aeon is one of the few, if any, CryptoNote coins without RingCT and Bulletproofs. If a venerability Or exploit were Found in this code, almost all CN coins would be affected except Aeon.
So many coins forked from monero and or just created from copy pasting monero code to say they aren’t a direct fork, can become obsolete from a major exploit in this code. It’s nice being in the sidelines due to this while still maintaining a private blockchain.
I would not begin to think or assume that there are vulnerabilities on RingCT on Monero. The Monero developers stand with the best in the cryptospace.
The advantage of not activating RingCT in Aeon is for the blockchain to remain smaller and more manageable. This advantage will be witnessed in 5 years, I reckon.
I'd say both. The possibility of a vulnerability in RingCT is very low but not zero. The possibility that the higher cost becomes unwieldy and impairs usage is also meaningful. I don't know if it is low or moderate (I wouldn't consider it high).