As far as configuring, you can use the zwave tweaker. You just temporarily assign any zwave device to the tweaker device type handler, configure it the way you want, and then assign it back to the everyday device type handler.
With regard to the other issues, if you’re not happy with SmartThings then don’t keep it. Every system has pluses and minuses. SmartThings is flexible and powerful, but as you’ve discovered, it’s not always easy to find all the features. And it’s primarily a cloud-based system, so it just isn’t going to be quite as quick as a fully local system. If that doesn’t work for you, there are a number of other alternatives. You might find the following of interest:
To contact support, click on “community” at the top right of this page and then click on support at the top of the next page. The options are a little different depending on whether you are in the US or the UK.
@JDRoberts is so nice and professional. Actually, this community is filled with helpful people that are willing to bend over backwards for those in need of help. However, whenever I see a title like the one in this post, it doesn’t appear that the poster is seeking help…
Lots of powerful home automation works off the shelf. SmartThings has not chosen to prioritize set and forget capability. But that doesn’t mean it’s impossible or not available. Every system has pluses and minuses. The systems that do offer set and forget capability generally don’t offer the customizability that SmartThings does. Different things work for different people.
(Jason "The Enabler" as deemed so by @Smart)