Yeah, I've thought about that too. At some point I'm going to do an in-depth study and write a big article about this, but I bet that a huge majority of votes (90% wouldn't surprise me) are currently suboptimal in some egregious way, mostly from voting too late.
In the end it will all come down to how the incentives are structured; there's no reason the incentives couldn't be redesigned to stop pushing everybody to spread their votes out.