Questions & Answers about Bizim bu öneriyi kabul etmemiz mantıklı.
Why does the sentence start with Bizim (our) instead of Biz (we)?
When an entire action is the subject of a sentence, Turkish treats it like a possessed object. The doer of the action takes the genitive (owner) ending, making Biz into Bizim. The action itself gets a matching possessive ending, which is why we see -miz at the end of kabul etmemiz. Literally, this sentence says 'Our accepting this suggestion is logical.'
Why do we use the short verbal noun ending -me in etmemiz rather than the dictionary form -mek?
We use the short verbal noun (-me) because we need to attach the possessive ending (-miz) to specify that we are the ones accepting. The full infinitive (-mek) cannot take possessive endings. If you wanted to make a general statement like 'Accepting this suggestion is logical' without specifying who is doing it, you would just use the infinitive: Bu öneriyi kabul etmek mantıklı.
Why does öneri (suggestion) take the accusative ending -yi here?
It takes the specific accusative ending (-yi) because it is the specific direct object of the action kabul etmek (to accept). Even though the verb has been turned into a noun phrase (kabul etmemiz), it still behaves like a verb internally and requires its specific direct object to be marked.
Could I leave out Bizim and just start the sentence with ?