While you may want to bring lead generation in house, you first need to ask these questions:
-- Do you know what the lifetime customer value is?
-- Does the cost of this lead generation tactic exceed the LCV? If so, then it's imperative to seek out alternatives.
-- Are these highly qualified leads?
-- What is the conversion rate of these leads?
-- How long is the sales cycle?
-- Consider the costs of in-house lead generation staff such as marketing strategist, copywriter, web developer, content writer, sales people, etc.
-- Then think of the marketing spend to acquire a lead such as search, remarketing, email lists, direct mail, print, trade shows, etc.

I would recommend testing a few new easy to implement tactics and comparing costs and lead quality to existing lead generation tactics.

Please let me know if I can help strategize. -- Sara