1. Do some market research, actually having some competition will make market research much easier - phone their clients and simply ask them which new features

1. Do some market research, actually having some competition will make market research much easier - phone their clients and simply ask them which new features they would like and what things do they have trouble with, then target clients with similar profiles. 2. You could build a migration tool so that you can approach their smaller clients, offer a cheaper package with the guarantee that you can migrate their existing data.