I don't know about anyone else but I'm a creature of habit when it comes to Blockland servers. I only visit servers hosted by people I know. Sometimes I venture out if I'm really bored.
Out of the hundreds of servers available at any one time, statistically it doesn't matter if half of those are stuffty because nobody really needs to visit every server.
Its selfish and impractical to ask for some kind of server list 'cleanse' based on what your tastes are. I find RP servers are picking up in quality Blockland-wide.