Not an independent opinion, but have a look at this: https://www.youtube.com/watch?v=HpK7JP9J7T8
HMRC has approved Excel as an acceptable solution for keeping digital records. There are no any indications that this HMRC position will be changed any time in the future. As long as Excel is acceptable there will be always a requirement for bridging solutions.
You can find our customer reviews here: https://appsource.microsoft.com/en-gb/product/office/WA104381859?tab=Rev...
We have released MTD Excel add-in. Our solution works with Excel for Windows, Mac, Office 365, Office Online and iPad. You can watch VitalTax demo (recorded on Mac) here: https://youtu.be/8OpkmJEHPagY
Watch how to submit Sage VAT return via MTD gateway: https://www.youtube.com/watch?v=HpK7JP9J7T8
Bridging software for the first year and beyond. We support Sage VAT exports and many other formats out of the box.