As someone with knowledge of the 'backend' such as the databases and websites etc, and I know others have already commented, the cost of running the basic system is not really that high.An own idol tracker like this would be great
However it is absolutely useless to even think about it unless someone with the knowledge how to do this properly volunteers.
Period
And you still would have a certain amount of costs paying the server etc,
Right now everyone will say we'll contribute but let's be honest... in a year or two the people managing it will be begging for donations
 
 
I for one would opt for nyaa
But why not use JPS as well.
All we would need is a good (and organized place) where uploads could be announced
A forum with 1 thread per torrent and a subforum for each category can be used as a replacement.
The forum search would lookup the torrents.
This is something I've seen in other places, it works well enough and its quick to setup.
A tracker is needed to properly track ratios and the like.
And since you mentioned volunteering...
I know how to setup the server etc but I don't know who to talk to.
I don't want this to die out just like that since its honestly the only place i know with a dedicated community.