Should you use Display Expansion for your Google Ads search campaigns? You may get a Recommendation that says "Get more conversions at a similar CPA using unspent budget with the revamped Google Display Network Expansion feature. Display Expansion on Search campaigns can help you get additional conversions on the Google Display Network using unspent Search budgets at a similar cost per conversion as Search. Your overall budget cap will be observed, and your spend on Search will not be affected.
Recommended because some of your Search campaigns have unspent budget that can benefit from Display Expansion."