Tari will function as an asset stack/sidechain for XMR sort of like how Counterparty (XCP) works with BTC.
However, Tari will have a fairly sizable miner's fee (higher than the 10% one zCash has).
What AEON should do is fork Tari's codebase (not sure if it is publicly available at the moment) and have something like "Ari" as an asset stack/sidechain for AEON that has no miner's fee.
This will be made all the more powerful if AEON successfully forks to an ASIC/FPGA friendly algo and the wallet/blockchain itself will be able to function on phones as was initially planned
This should not do Aeon same as Tari was not made by Monero. This should do someone that will need Aeon miners to secure their coin/token. Hopefully someone will do that but if you think about it might not happen ( or maybe I am wrong) since they can rather just make another side chain beside Tari and be mined with Monero again. Much more miners on Monero to secure it.
The idea would be to get AEON to the point where it can operate on say block Nokia phones. Then, the developing world could use AEON and ARI to engage in phone-to-phone transactions as well have some asset issuance, management, etc. exposure.
Andreas Antonopoulos (@aantonop) had a great video on this where BTC could provide first world financial offerings in the developing world. AEON just needs to beat BTC to it
Aeon does not have the infrastructure to beat BTC to it, however. We should be realists. Aeon is a small community and might be a small community forever unless something very negative happened to Monero.
Honestly, back in 2016 I thought that was going to be the case when everyone and their crazy uncle was pissed off at Riccardo for the MEA announcement, lol.
I bought a good bit of aeon as a hedge during that time but have been bag holding ever sense just because it is the best current hedge bet on the best system w/o a premine/formed scam (cryptonote) of digital cash.
Something may never come of it, but I like to hedge my bets appropriately.