No offense, but I think you are missing the point. English is not a language that is easily accessed by deaf. It is sound based. Its spelling rules are archaic. It simply is not something that is the best language for a first language for deaf people.
Most deaf people you meet who are good with English are good with English either because they were born hearing and acquired English early (like me) or who were born to a family where ASL was invested in them early and then they learned English second. There may be a few who learn English well through SEE, but you will find that SEE signers when they become adults don't continue SEE but change to ASL. Why? SEE breaks some universal linguistic rules about signed languages. In fact, as far as I have been able to determine, those who invented SEE did not even investigate the linguistic rules behind sign language but imposed spoken language on signed language. There are certain rules that govern all signed languages and SEE breaks those rules. I can explain this in detail later if you wish.
It is far better for deaf to make ASL their first language and then based on a solid understanding of ASL, then learn English as their second language using ESL (English as a Second Language) strategies. As it is, deaf are taught English using English as a First Language strategies which fails. Why? English is not the deaf child's first language. They cannot acquire English through auditory means. This means that they will not do well in an English as a First Language class. Yet, that is what English classes in a mainstream classroom will follow. It is a recipe for disaster. That is the reason for some deaf people's failure to learn English well. It is not ASL's fault. It is the fault of the educational institution that failed to realize that deaf people are a linguistic minority that need ESL strategies not English as a First Language strategies. The educational institution focuses failed techniques for teaching English to deaf and makes them miss out on true education because it is a cultural imperative that they must learn English first.
Let me also add that I have not researched all the ASL bi-bi programs out there. I suspect that an objective study of the failures that may occur in bi-bi programs may not be related to ASL itself but how the program is set up. Are the teachers truly fluent in ASL? Do they teach the students well? Are they teaching English from a ESL perspective? Those are questions I want to find out about. Unfortunately, I can't research everything ... 
But I hope to get to that at some point.
Written ASL within the deaf community is a wonderful tool for our education. When we are relating outside the community, sure we can use English. But when I am writing to a fellow deaf person, why in creation should I be using English when our language is ASL? That is ridiculous. That is linguistic oppression. Classic sign of linguistic oppression. Only in the US are people afraid of a little linguistic diversity. Elsewhere in the world, linguistic diversity is expected and many linguistic minorities are realizing that they have a culture and language they can be proud of. Deaf can be proud of theirs. We have 114 different sign language communities. We have a rich history and many cultural developments that are unique to our language and cultures. Why must we be ashamed of ASL and say that we *have to* accept English as our *only* language .... "because that is just the way it is." That is settling for less than the best. Notice I am not saying perfection. But there is much more available to us than that we have right now.
The debate now for those who want written ASL is what is the best way to write it. So far, the best I have seen is SignWriting. I am interested to see what other options people think could be available, but I am skeptical that a logographic system could work. I'd like to see a discussion on that.
But I will say this. I have met many a deaf person whose ASL fluency was equal to my English fluency. They could express everything I can express, but in ASL. Should they be penalized simply because they do not conform to some misplaced cultural imperative that English is somehow the only language that a person can use in the US? I think that is rather illogical. I can see that logic applied to other hearing minorities because they moved here (though respect for their language must be maintained). But spoken language is not our language so why force the idea that the only good language is English? Strange!!! Nice for you hearing people, but grossly unreasonable for us deaf!
