I think that the Lutron Caseta/Serena system is still the best you can buy at this price point, but we know it can do SO Much more if they would just add a few more pieces of hardware and software. It seems to be at a standstill and it really seems that it's more of a marketing decision i.e. they don't want to cannibalize their pricier systems, rather than a technical issue.
Needed:
Dimmers and switches to also send commands to other dimmers/switches
Multiple tap, press and hold etc as a way to use a single switch or pico to perform different functions
True multi-button scene controllers
Occupancy sensors
Motion sensors
Light sensors
Multiple user geofence options that can trigger events based on whether all are home or away
Higher voltage switch for heaters etc
More and better integration with other systems such as alarms, thermostats, security cameras etc
Would be nice:
A way to integrate their other systems such as RadioRa into Caseta (I know I'm dreaming)
A toggle type switch; in some rooms such as bedrooms and bathrooms you tend to feel for the switch which is impossible with Caseta switches/picos
Water leak sensor
Vibration sensor
Power usage sensor
Door sensor
SmartThings makes a multipurpose sensor that does a bunch of things that I mentioned: http://amzn.to/2g6JkXg
Just about everything I mentioned are things they already make or do for their other systems, which is why I think it's mostly a marketing issue, but as has been said here ad nauseam, I'm not about to switch to their pricier systems, ever. As it is, you can see on the internet that whenever Caseta/Serena is mentioned, it's usually followed by comments about it being too expensive compared to the other options. I think all of us realize that our systems are a great value for the price compared to those other systems, but it could still offer much more value.
Let me know if anything I've mentioned is available or there's a workaround that I've missed.