Since local variables need to have their types inferred, and from that we can infer the type of variables used in each method invocation, it would be possible to recover the generic types of classes / fields removed by obfuscators.

A nice feature to think about in the future.
All the best
md_5

PS: I'll probably be making random tickets slating all the features I think would be a nice addition - and maybe even implement some when the codebase gets a bit further along.