Thought it was supposed to be similar is size to the E-E? Wouldn't have expected it to land in the first place, as IMO that's something that was already silly in something the size of Voyager, much less any larger ships.
I have to agree, the Vesta's are smaller in volume but almost as long as the E-E. I do however think that the compact design of the Vesta might be beneficial.
Why can't all of the Vesta-class ships land? It doesn't make sense unless the Vesta is more like a basic ship design but each ship of the class is built differently with various test bed technologies or some such.
True! Aventine was outfitted with more experimental goodies. They might not have implemented the entire landing system from the start for various reasons. Perhaps the system could be installed during the next service window.
My only concern would be for the pylons, they need a strong SIF to reinforce them. No problem in normal operations, but I would recommend "saucer" separation in times of emergency.