Including all the other factors you already outlined having a spouse that lives abroad doesn't make your case stronger.
Regarding your previous query about moving tax residence, I have scoured the guidance again and found this:
Principal home in the UK
If applicants say their intention is to have their principal home in the UK, you should accept that they meet the requirement if they:
meet the residence requirements, without the need to exercise any discretion over excess absences other than up to 30 days
have an established home here
have been, or intend to be, absent from the UK for not more than 6 months
the absence was, or will be, clearly temporary
if it is an intended absence, we are satisfied they intend to return to the UK
they have maintained an established home here where any close family who have not accompanied them abroad have continued to live
there is no information to cast doubt on their intention, for example, either:
a partner who is or intends to live outside of the UK
a recent absence from the UK for a period of 6 months or more
Where it is proposed to exercise discretion to waive excess absences, you must be satisfied that the applicant has an established residence, family and a substantial proportion of any estate here. You should normally accept that situation will continue, and that the future intentions requirement has therefore been met, unless you have information that, since the date of the application, the applicant or their partner no longer has an established residence here or is planning to move abroad.
Where it is not certain that a residence has been established you must make enquiries to see whether there is evidence of a principal residence outside this country including whether the:
applicant or their partner owns property abroad
applicant’s family live abroad, either in the family home or elsewhere
Where there is such evidence, or your doubts cannot be resolved satisfactorily, you must refuse the application.
Information may also come to our attention that HMRC regard an applicant as domiciled abroad for tax purposes. In such cases, you must request the applicant’s permission to contact the HMRC. You should then ask the HMRC to provide us with a copy of the applicant’s completed ‘Domicile Enquiry’ questionnaire, which may throw some light on future intentions. If the applicant refuses permission, you must refuse the application.
The fact that an applicant’s spouse or partner is not applying for citizenship should not, of itself, be taken as evidence that the requirement is not met. In such a case, however, you should make enquiries of the applicant - whether the spouse or partner is resident abroad or whether there is any evidence that the spouse or partner intends to move abroad. The fact that a spouse or partner is living, or will shortly be living, abroad should not normally be taken as evidence that the requirement is not met if any of the following apply:
the couple are separated
the spouse or partner has applied for, and is awaiting, an entry clearance
you are otherwise satisfied that the spouse or partner intends to join the applicant here
it is clear the couple are content to live apart for the foreseeable future
If none of these reasons apply, and the information suggests that any applicant maintains, or intends shortly to maintain, their principal residence abroad, spends substantial periods with their spouse or partner and children abroad, the application should normally be refused.
It is up to you to decide how much becoming British is worth to you and your spouse. If it is, you may have to bite the financial bullet for a couple of years, and put the wish for a sunnier climate on hold. Once you naturalise and obtain a British passport you can move abroad as you prefer - but being in a rush could well jeopardise your future intentions requirement.
All advice comes from personal research and experience and should not be regarded as professional opinion.
