I'm afraid I have to agree with Neil, they still seemed rushed. It's an interesting concept, but a concept is a concept, not a build. I'm still tweaking my models, old and new, it's a process that takes some time. And having comments is good and all, but think of it this way, for each view you receive, that means someone thought your MOC was good enough that they stopped what they were doing and took a look. Please don't take what we are saying negatively, it's advice and take it at face value. ^Blub^
You need to take the time to improve your builds. While their quality has been improving, they still seem rushed and unfinished.
Rather than putting up a new mech every few days you should take the time to modify, tweak and improve your designs. People comment on things they find interesting about the build; while your concepts are interesting your designs are very bare and devoid of eye-catching details.