There is a good chance that ETH will keep the #1 volume spot on Poloniex for the foreseeable future.
In order to help ensure XMR trading pairs (giving XMR better liquidity and visbility compared to when only BTC and LTC trading pairs were offered) continue long term, please use them when you can. Bid/Ask spreads will decrease with higher usage.
Instead of trading XMR for BTC and then BTC for LTC trade XMR for LTC
Instead of trading XMR for BTC and then BTC for BBR trade XMR for BBR
If the spreads are greater for the XMR trading pairs, use limit orders instead of market orders.
https://twitter.com/MoneroPromotion/status/698267504452349952A mix is necessary. I think it's pretty public knowledge that I've gone full retard on Cryptonote and 2/3rds of all my savings is in Monero and Aeon, with the other third in Bitcoin.
My plan is to eventually add a small stake of Boolberry as well.
One way to support XMR, AEON and BBR at the same time is to use my advice above! Hopefully Poloniex will add Aeon soon.