Adwords "suggested/reviewed" campaigns

[cyberkiller]

Lately i've been having google offer me "suggestions" on my campaigns. Saying they were reviewed by their specialists and suggesting improvements/modifications as in keywords and cpc changes. Are these usually good or just a ploy for google to make more bank? Just wondering if I should consider using their changes or stick with what I have.

Here's the google email

Google AdWords is committed to helping you create and maintain
effective advertising campaigns within your budget. We noticed that at
least one of your campaigns has the potential to receive even more
targeted traffic, so we've looked at your keywords and designed a
proposal to bring you an increase in clicks -- without an increase in
your budget.

Most of the changes are just in max cpc bid.

Thanks