We are currently looking into the first issue that you have mentioned and we might be able to fix it for our next release (Q3). Is the feature mentioned in that first bullet a must-have? It if is we could possible put more effort into it.
In regard to the second issue, there is no way to turn off the standard mouse click selection but we could easily introduce a property to support such scenario. I have added this simple feature to our to do list and we will implement it as soon as possible.
I believe that the last issue will be resolved as soon we fix the first one.
Thank you for you valuable feedback. I have updated your Telerik points.
the Telerik team