You likely can increase adoption by explaining to them how they can do everything right and then still have their funds seized by Mt.Gox for totally undefined "suspicious activity" which is completely impossible for them to prevent.
Are you just being a wise ass or are you serious? You don’t think we should be attempting to increase awareness because MtGox sucks?
Going along with my previous statement regarding fees, you could push Bit-Pay, which hasn't really had such issues and is business oriented. To avoid bringing new business converts too far outside their comfort zone by eliminating the fee completely, you could show them that there is a way to do it for a reduced fee, which in some cases may be substantially reduced (compare with credit cards for instance), but not gone.
Although I have not experienced Bit-Pay from a business owner's perspective, I'd bet that they would have less of a support backlog and noob agents problem compared to MtGox. MtGox's merchant solution is cheap, but a business owner wants to get answers right away if there is possibly a problem, and I don't know that I would want to rely on MtGox for that. In addition, MtGox's merchant solution was recently bolted on to the back of their exchange API, and Bit-Pay have been doing only a merchant solution since their inception.