That's a tough decision that everyone must make, especially considering that we really don't have that information to begin with (83% of witnesses didn't even respond). Everything's a process, and what's important to me at this stage is who is receptive to the idea of simply just getting started with the process of making the decentralization of the physical aspect of our network more accessible to interested people via the creation of good documentation on the subject and the willingness to assist in the effort. To my mind, that means that those witnesses who responded deserve my vote, and that's what I did, even though most are not on servers they actually own and have physical access to. I think what most impressed me from everyone's response was the need to be practical and to compromise while at the same time keeping in mind what the ultimate goal is - another reason for voting for them. The rest of my votes are still with the top, long term, always having been there through thick and thin, reliable witnesses, on the basic assumption that they too are practical, and compromise only as needed, and also have the same long term goal. Not an easy decision, but with the implementation of vote "decay" where old 'stale' votes made years ago by people who are no longer active on HIVE disappear, I think things could get interesting as witnesses begin to "campaign" more actively for votes, and perhaps share more information about themselves as a result. Again, I see it as a process that has only just begun, and my support has to go to those who are favorable to that process, but the decision will always be individual.
Hope this long drawn out answer helps.
When this is going to happen ?
My understanding is that it's on the slate and imminent.