SPF - DNS Record

Hello guys,
I'm using 1.2.17 on Jessie and I'm presented with the following "problem" (not so a problem)

When I configure a new domain, it created the zone file with the following:

It would be nice if it could be possible to edit through web UI also this record (for each domain). For example:

How much effort do you estimate in implementing that enhancement ?

Thank you.
kindest Regards,
Kess

@Ninos
Thx for reply, I didn't explain completely what i mean.

The SPF record is something special that can be defined only once per each domain. At present, if you use the actual i-MSCP interface to add custom DNS entries you can create multiple v=spf1 TXT records. That's why I asked for such implementation in the custom DNS. v=spf1 should not be treated like a normal TXT record.

References:
- https://support.google.com/a/answer/4568483?hl=en
- http://www.ietf.org/rfc/rfc4408.txt (section 4.5)

I hope now it's clear enough. if not, please let me know.
Thank you, bye Kess.

Thank you @Nuxwin
this is just fantastic