Replied 4 August 2017, 3:07 pm EST
Thank you for your questions. I will answer them in the order which they were presented.
1) Unfortunately, I do not have this information readily available, but I will notify someone from our product management team to see if they can answer this for you.
2) When moving from COM to .Net you will be able to port over your layout, but your code behind will need to be rewritten. You can find some additional information about how to approach this here
3) You can install the latest SP without the previous ones as long as it is a full install. However, to license your product you will need to ensure you install using a licensed install, and then upgrade to the latest build available here
Please let me know if I can be of further assistance. Thank you!