all of the other people that started playing with me quit. I'd join a new legion, but I've contributed too much to my Base to just quit. Blah.

dude i know your pain.... but quit before you have put too much into it!!! the bonus and communication of a larger/active legion is worth it

I know that must suck having all that time spent into a legion base then having second thoughts about it. You could always stick to the base and go out on a limb and ask for a promotion if you think you have done your fair share. Or you could make the ultimate choice and try to find another legion and go though the whole process of trust and the whole nine yards thingy, or try creating your own legion. There are many decisions you can make, but hope everything goes well for what you pick. good luck and have fun.

This game is exponential. Take whatever your level is now and double it. When you hit that level, you will look back at what you had contributed to that base and laugh. Time to find a good active legion!

We had a similar problem in our Legion.

We had to kick most of our members because they hadn't come online in weeks.

Its been really good for us though because everyone who is left is really keen to play and help each other out. Feel free to check us out:
It may be the sort of legion you are looking for ! ! !