Comment by ogiberstein

You can create your own 'bundles' of coins and rebalance them using Coinrule. Some of our template strategies have been backtested (see here for a few of them: https://help.coinrule.com/en/collections/2700051-template-ru...).

That said, we are also going to add other asset classes in the future and this will allow users to get in and out of ETFs easily.