Cater for phone shortcodes when Mobile phone entered but not Home phone?

[bobbingwide]

Very soon we're getting updated to Full Fibre Broadband. We'll be losing our home phone number.
It's easy enough to change our websites to blank out the home phone.
But what do we do about the shortcodes that display the home phone number?
What are the options?
Is it worth altering the shortcodes to cater for this?

Current behaviour

Each shortcode only displays the number if there's a value for it.

Shortcode	Displays
bw_tel	Telephone number ( inline )
bw_telephone	Telehphone number ( block )
bw_mob	Mobile number ( inline )
bw_mobile	Mobile number ( block )
bw_emergency	Emergency number
bw_fax	Fax number

So [bw_emergency] and [bw_fax] won't display anything

Options

1. Blank out the home phone number in Telephone
2. Replace the number in Telephone with the Mobile number, making it the same as the Mobile
3. Replace the number in Telephone with the Mobile number and blank out the Mobile

I'm going to try option 2.