Does wrapping actually help or am I just trapping damp? Straw jackets vs tar paper in a mild-but-wet Polish winter

Małopolska, fifth year, nine colonies. My grandfather wintered bees in straw jackets and swore by them. My neighbour wraps in black roofing felt. Our winters have changed noticeably in the ten years I've been paying attention: less of the deep dry -20°C cold and more long spells of +2 to +6°C with rain and no sun. That's the weather I'm actually preparing for, and I suspect it changes the answer. Straw absorbs water and stays wet against the boxes. Tar paper sheds water and warms in weak sun, but it's a vapour barrier, so any moisture that gets between it and the wood has nowhere to go. What I've settled on tentatively: insulation above the crownboard on everything, a small upper entrance, roofs weighted, and a wrap only on the two hives in the most exposed position, with the wrap standing off the woodwork on battens so air can move behind it. Is that overthinking it? For those in wet mild winters — Ireland, Britain, the Low Countries — does wrapping earn its place at all, or is a dry roof and a good hat all a colony needs?