I think Maura would be great for the island based stuff (it's not like you have to do much there beyond strut in, be a bit dramatic/sexy.. and announce who is going)..but not Aftersun. You really need an experienced presenter to handle the interviews.
As mentioned on twitter....the perfect solution this year at least (thanks to covid/Laura having a baby) , would have been to have Laura do Aftersun and stay in the UK, while Maura could have spent the duration out there, to handle the on island stuff. A Laura/Maura tag-team could work well for the show, as you've got the experience of Laura for the presenting & interviews, with Maura for the grand entrances/dramatic stuff (although it's hard to say if Laura would have gone for that, as she might see it as being downgraded. Still, it would save the hassle of having to fly back and forth/leaving her child, as well as ensuring someone was always on hand for villa announcements/vote offs).