Can you please help me to arrange these sentences and make it just one sentence by including all of the points

Question

Dear Sir,

-- We feel very grateful for being invited to give inputs
-- We love to participate to participate and to be part in that important project
- But it is still not very clear to us as to what kinds of detailed inputs and contributions that we may give as you expect from us.

Answer 1

Although we feel very greatful that you invited us to give our input in that important project, we are still uncertain what detailed contributions you expect from us.

For being invited? Passive, yuck
change "not very clear" to "unclear"
Love to participate and be part in - redundant
inputs and contributions- rudundant
kinds of- unnecesary
it is still unclear to us- we are still uncertain
we may give- what, are you going to take you input?

Answer 2

Dear Sir,

We feel very grateful for your invitation for us to participate in this important project and give our input. However, it is not clear to us as to what kinds of detailed contributions that you expect from us.

Answer 3

Although we feel very greatful for being invited to give inputs and love to participate and to be part in that important project, it is still not very clear to us as to what kinds of detailed inputs and contributions that we may give as you expect from us.

Answer 4

We feel very gratefull for being invited to give our input, and we would love to participate in and to be part of your important project; however, it is still not clear to us what kind of detailed input and contributions you would expect from us.

Answer 5

We are grateful to be invited to participate and give input on this important project, however, we need clarification on the type of contributions you are expecting.

Answer 6

Dear Sir,

Thank you for giving us the opportunity to participate in this project, although we appreciate the chance to contribute to it, we are still unsure what you expect from us in our position.

Answer 7

Dear Sir,

We are grateful for the opportunity to provide our input for your important project; however, we are still unsure of your expectations.

Answer 8

Dear Sir,
We would like to participate in this project and we appreciate you wanting our input, but will you please make it clear as to what you expect from us.

Answer 9

Dear Sir,

We are happy to participate and give you our input, however, we are unclear as to what your expectations are.