なかなか良さそうな提案だ。の英語

That sounds like a fairly good proposal.

That is a good suggestion.

That's an interesting proposal. I'll think about it.

That's a great plan.

We appreciate this proposal a lot.

That's a really wonderful plan.

That is an extremely interesting proposal.

a sensible suggestion

It is worth looking into this proposal.

I am in favor of the proposition.

I'm in favor of the proposition.

an unexceptionable suggestion

I agree to your proposal.

A good idea suddenly struck me.

I think I have a pretty good idea.

Those proposals seem very much alike to me.

That's a constructive suggestion!

Well, I have a suggestion to make.

I am quite agreeable to the proposal.

I think that's a good plan.

I think that is a good plan.

Such a proposal would only be turned down immediately.

a helpful suggestion

That's a good idea!

That is a good idea.

That's a good idea.

a ridiculous suggestion

That is a good idea.

I think that I want to suggest that.

This proposal must be considered at leisure.