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If you want to make it more efficient add some TRVs (maybe smart ones if you think they're worth the cost). Gas will still be a solution for quite a while, particularly in places like flats converted from houses.
I definitely wouldn't be ripping out gas heating unless it was for other reasons (e.g. aesthetics).
Personally I'd value a place with electric heating lower than somewhere with gas. I don't know if things have moved on in the past 10 years but previous places with electric heating have been a hassle.
I'm not totally clear, are you thinking about replacing your gas boiler with an electric one, or are you thinkingi about replacing your radiators with electric heaters?