Please do not release your upcoming W3 Total cache on here. Release it as a paid version and I'll be the first to sign up and pay you a yearly developer sub to use it.
I don't as a rule use FREE plugins on our sites because I know as a fellow wp plugin developer the time and effort that goes into firstly building a great plugin (and W3 Total is), then the ongoing upgrading, development and support. It is a massive commitment and one that is not financially sustainable for an independent operator in the long term.
Your W3 total cache was an exception, as I could not find a Premium Plugin that was as good. Now as the plugin is not upgraded and is breaking down, because you have either had to work on other projects to pay your bills or have just lost interest I am working through the task of taking it off over 60 sites that I have it installed on. This is a big cost to me in time and time is money. This is exactly why I do not use Free plugins on my clients site.
Even if you eventually get the upgrade out on here I will not reinstall it - unless you release it as a new Premium plugin that I can pay you a yearly sub and know that you are going to be making enough money to either be able to afford to maintain your creation - or stay interested - long term.
As for all the abuse you are copping - mate just tell them to go and invest the thousands of hours that you would have already invested in W3 Total cache and build their own caching plugin. Your not here to work as their unpaid slave and cop their mindless abuse.