It is always the case when well known service or site update their whole layout - people usually get mad, why? Because they are accustomed to he old look.
I have seen people complain about new YouTube layout or new Google functionality just because they were so familiar with the old one.
Just wait, and everyone after some time won't even remember how the old layout looked like.
Every version we've launched we have gotten a similar reaction. Primedice 1 was entirely broken and featureless and users complained when PD2 effectively created dicing as it is today. The new version is not perfect but it's a step in the right direction and we're closely following user feedback and have in house developers working on some patches to improve the experience.
We do appreciate all the feedback though and I promise we've been looking through and considering all of it.
Personally the site has grown a bit on me. It would be (or would have been) really nice to have had it tested out, or beta tested (with fake money on a separate small fresh database), and allowed some of the betting bot programmers (which you allow) to re-script and debug, and also work out the bugs, before launching.
I'd have to say that's my biggest issue, is the way I liked to bet, is no longer available on primedice, because I used one of the many public available bots.
So for now I have to use a site I dont trust as much, but until the dev of the bot can update, I have no other option.
Hopefully it will get worked out in time.