I don't know how much the "I can schedule a weekly transfer and automatically invest across 6-8 asset classes" is worth to you.
But if you go from $50k to $500k with them you will be paying ten times as much (depending on the fee structure, of course). At some point, it may not be worth it.
If there’s a single ETF that will do what Wealthfront and others are doing, I’d switch away in a heartbeat if the fees were lower.