SharePoint Online Property bag

Hi,

We have a requirement that wanted to set site level metadata for easy findability hence we decided to use site property bag so that it can be indexed and searchable.

1.  Any Pros & Cons of using property bag?

2. Any other recommendation other than property bag for setting site level metadata?

3. Does Microsoft have a plan to decommission property bag feature?

Thanks in advance,

Regards

KMSrajan