Actually I also use free lic version for years. And I am really happy with all possibilities RU provide. Last year I reach 10 computers in the Viewer limit, and for couple more connection I have to keep on desktop text file with ip addresses and ports to create and delete connections back and forth. Not big deal, I am not using such connection often, but I am ready to pay $99 "STARTER" for comfortable usage. Only one thing prevent me to pay right now - this license bound to current major RU version. After v8.* will be released I have to buy it again, and not sure I am really want to pay $99 every few years just for comfortable usage of viewer.
So, if it's possible to create special type of licence to add 10 more remote connection to viewer and not bound this licence to current version - it's will be good opportunity for users like me pay for it once instead of use free lic.