One feature I would really find helpful for leads is the ability to convert it to a deal, but still track my leads data after that. I am responsible for knowing how many leads I generate per month and how many I convert as well. I can't really do that if  I convert it to a deal because it is gone from my inbox, so I'm having to create duplicate deals. Having an insights page showing how many leads I added that month, how many leads I converted to deals that month and what my conversion rate is would be really great!