I had a look at the Sahabiyyeen list on Arabic Wikipedia. There are articles about many more individuals, but most of those are very poorly sourced. But if we go through them properly, I think it will be possible to at least get enough information about notability and minimal biography. But the problem is that my Arabic is very very poor - All I can understand on reading nearly properly is the Qur-An. I tried Google translate as well, but the quality seems to be very poor. But I will try my best to do what I can to improve those articles. I used to work basically on Astronomy-related articles on Malayalam Wiki. I think this can be my major field of work here.
I agree with your view that we need more accessible information about all these individuals. But I am not sure whether Wikiipedia would be the right place for that. Perhaps, as you said, an extension...
And thanks for all your time. I can understand that you are a busy person but you have been very kind to me and have spent a lot of time discussing with me. I hope I will be able to deal with my co-Wikipedians in such a manner. And I will try my best to take your advice and improve these articles and their sourcing. Perhaps it will help improve my Arabic as well....
Thanks again and best wishes