Hello Navi,
quote:
Such as it is, we have a lot of trouble.
"Such as it is" is a deprecatory phrase, and usually follows the object of deprecation. Thus I might say:
1. Here is my answer - such as it is.
which would imply a modest attitude on my part towards the value of my answer.
Your example seems to imply that the "trouble" is not particularly troublesome.
quote:
As it is, we have a lot of trouble.
"As it is" signals a return to discussing the current situation, after a digression or speculation of some kind, e.g.
2. It is straining our budget. In the medium term, we may reach less people as a result. As it is, we are already under funded.
No doubt a context exists which would make your example natural; though I can't think of a likely preceding statement at the moment.
quote:
Such as things are, we have a lot of trouble.
"Such as things are" means "in the current situation"; I would not expect to encounter it very often.
quote:
As things are, we have a lot of trouble.
This is much the same as "as it is". You might also hear "as things stand".
Best wishes,
MrP
(Answers relate to BrE.)