In order to balance a game, you either need professional playtesters to play it for some hours and give a report, or you get the average joes to play the game for a long time and gather statistics on the wins/losses and various details about those games played (team sizes, loss margin, each team's stage/kills, etc). Since nobody has the money to hire professional playtesters to play some rounds of Tremulous and give a report, the latter option is the one used.
You say you played for two days. Long before MGDev even existed, there was trem.tjw.org with most of the same changes (at the very least, the turrets had been changed long before MGDev). Many games were played there, and statistics gathered. In the eyes of those tweaking variables to balance the game better, the turrets were changed to the way they are now for the greater good of the game.
While input from people is certainly valid, and I'm sure welcomed, someone who has "played for two days" doesn't have nearly the experience as games that had been running for months with a large sampling of varied players - unless you happen to be a professional playtester and left that part out of your post :>
You say "Hummies camp becuase they get killed in outside of base. Now they made the turrets painfily slow, therefor lettng you get killed not only outside base but also inside." How is this any different than aliens? If I'm a dretch or a granger, and I'm camping in the alien base, a human can walk to the nearest entrance and shoot me far from the range of any defensive structures. I could be sitting on a field of acids, and still get shot and killed. Now, a human can be sitting on a field of turrets, and a skilled dretch can come in and eat him before the turrets can lock on. Even without weeks of gathering stats on games played, that sounds more balanced to me. If you're worried about builders getting killed, take a page from the alien playbook - keep a somewhat strong player in the base with you while you build, to help out the defensive structures and try to prevent the builder from becoming an easy target.
