Well we are always recruiting if you ever want to join us
Also in case you didn't see the post, we are opening our codebase to the public around March in an early beta release of the code. Our modifications are insanely huge considering we have only been in development for around half a year.
As far as codebase decisions, I can share my experience.
1) Despite being a Java-coder by trade, I was turned off by CoffeeMUD's resource needs and the daunting task of trying to modify such a thick system that is already in place.
2) I never liked any of the other DIKU derivitives, Smaug, ROM ... you name it, only because I had really become a fan of the great usage of macro's and modularization they did on Circle. To this day (I only did limited checking though) I have not found an OLC I love more than Oasis.
3) The C language in my country is a lot more valuable language to be proficient in than Java
4) I also tried using a couple of more raw MUD engines, and it was too daunting on the side of aboslutely no features, and I would have to code everything
With that being said, whatever decision you make, no one will hold it against you, we will miss you from the community is all