While I think the idea of the Senate is probably a good one, I think they should have significantly less power as a body than they do currently. The House should be able to overrule/bypass the Senate with enough of a majority and the Senate should not be solely responsible for confirmations. If the House is 51/49 let the Senate decide, if the House is 60/40 or maybe even 55/45 the Senate should be irrelevant.