How these phrases can be simplified? [closed]

I often write technical texts and not being a native speaker I am facing difficulties to make introductory sentences (including this one) concise. I just scrolled through my manuscript and found these patterns repeat many times:

• The advantage here is that there are a number of reference results for ...
• What is even more appealing is that it can ...
• Unusual here is that this is ...

Can these intros be optimized somehow? Some extended example would be

Unusual here is that this is a matrix with small off-diagonal elements.

The lengthy phrases are adverbial and can be replaced by adverbs:

Advantageously, there are... ;

Moreover, it can ... ;

Unusually, this is ..

Try to use the principal nouns as your subjects.

Unusual here is that this is a matrix with small off-diagonal elements. --> This matrix is unusual in having small off-diagonal elements.

The advantage here is that there are a number of reference results for … --> This approach (option, ...) has the advantage of having a number of reference results for …

What is even more appealing is that it can … --> It has the even more appealing feature of ...