I always thought it would be fun if fields respawn as if they were "growing". (Kinda like tiberium grows for any C&C fans out there;) A field that is constantly being emptied, would not only respawn slower, but gradual. Instead of 20 roids, it starts with 10, and then every few hours another one was added, then the fields that noone really mines would start gradually getting larger (within reason of course) and more popular, again, shifting mining locations and hopefully promoting more exploring.
Also, going a step further (perhaps too far..haha)..i always thought it would be cool if SOME fields were special, and if they weren't touched in X ammount of time (2 days or something) then some of the roids started growing in level... a lvl 1 roid after 2 days might become a lvl 2, then a few days later a lvl 3. (I'd imagine there would be a level band.. 1 could get as high as 3, etc.
Also going with that thought, if noone mined them in days, they could +1 in qty inside, so it if had 5 titanium ore, and noone mined it in 3 weeks, it could grow to 10-12 titanium, something like that.
All things as a miner that would REALLY make my day! lol
Then again, I also thought it would be fun to throw these thigns into trading and combat as well, I alwasy thought it would be fun if there was ONE random mob that had like 1,000,000 credits on them...could be a level 1, could be a level 50, who knows... but if you kill it..suprise.. kinda like a lottery for killing...
again for trading, if there was a 1 in 1,000 chance that a trade good you sell had something special with it, (who knows, maybe the wrong thing was loaded into your cargo message pops up, and the vendor buys it for 5 times its value and experience.
Ahh the things i dream up. (and yea i know this wasnt how it was at live, these are just ideas i have that i think would make it more fun:)