There are of course tools that would been written before. I have not seen anything that would be as simple as I'm proposing (with the exception of the .NET where you can get a list of objects).
What I'm doing is based on the JBoss Profiler that I wrote many years ago (and I left it rotten and dead)... so this would revive the simple parts just for the JUnit Tests. You just get a simple list of Objects before and later. Regarding the criticism to JMVTI.. I have it already written, besides any tooling around Java and Debugging will require C dev... the project itself already exists.. and I think it's viable. I am looking for options to host it, while you seem to be looking for counter arguments for having it done? if you give me an alternative in Java where i can do jvmti.getallObject(clazz); and eventually list the references for it.. perhaps I could just use that option instead. Such thing will be written in C anyways.
