Considering delivery addresses can have different Line 1's but still be the same company it would be much more beneficial to have an option to match only on Postcode. If this was an option (toggle) to choose whether you want it to just Address Line 1 or not as a match then this will make the RFM by delivery address useful for a wider range of people.
Totally agree with this idea, having to adjust all our Line 1 company addresses in the CRM is a nightmare and doesnt always guarantee a match with the delivery address specified by the customer. For example abbreviations like Hosp instead of Hospital (in the Company addresses) if exact matches are required then it limits the changes of an exact match.