I believe I have responded to rezon8dev briefly internally but I wanted to write a reply anyway for anyone else reading this.
Specifically, support: as you mentioned the email support is fairly sporadic - this is indeed true. We give any spare time we have to answering support tickets, unfortunately this means at busy times for all of us, it can be a long time before people get responses.
Running an open source plugin is one thing - which does require a fair amount of time - however, WP Remote is not just an open source plugin, the plugin is probably 2% - 3% of the whole codebase and complexity of the whole project. Personally, I think the issues here are ultimately down to priorities. The only way we can dedicate any more time than we currently do is to make it more of a priority for us, this is why we are working on adding some premium features / backup solution (paid) so we can focus more effort on the project.
This way we can have the infrastructure in place internally to give wp remote the amount of resources it needs to iron out bugs, offer more responsive support etc. I really like working on WP Remote, and look forward to working on it more in the future if people keep using it - hopefully we can get some people on board for some premium features so we can better support everyone who uses WP Remote for the existing features.
If not to say anything else: wp remote is still alive and (mostly) well! We are working on it, and as for the blog: there hasn't been many posts - I think the fortnightly "latest tweaks" updates were probably boring people, and we haven't had any "substantial" features added in a while.
Thanks very much