Since you have calm screen working with a 2017 APIM, there is really nothing to be gained as far as features by upgrading the firmware. If you choose to do so, make sure you download the original files in case you need to recover. This unit will upgrade but I would just stick with what is available thru FORScan.
As far as the HD radio and Sirius cover art, these are sent over the air on both platforms. SiriusXM cover art seems to be hit and miss on pre-2019 ACM (radio) modules. HD radio cover art is not supported in the Ford ACM. (This might have changed recently with Sync 4, but I have seen no info about it.) USB artwork is supplied thru Gracenotes or from the media file, depending on your settings for Gracenotes. CarPlay and Android Auto can use Gracenotes if enabled.
Here are some discussions about this on the forum:
3.4.20196 Album Art Question - Ford / Sync 3 - CyanLabs Official Community
SiriusXM Album Art/Logos in 3.4.20282 - Ford / Sync 3 - CyanLabs Official Community
Upgraded to 3.4 lost HD Radio - Ford / Sync 3 - CyanLabs Official Community