I would agree with almost everything you mentioned. Multiple times If I could.
1. Range indeed does need off-hand item to be introduced in game, especially, when mages book and other prayer books can be used with no requirements at all. Odium ward seems like an Option. We could then introduce three new demi-bosses or bosses in, maybe, Wilderness? How's that sound?
2. Dragonfire shield doesn't need any buffs, it is good the way it is, and... If i understood correctly, you want desert strykewyrms to be introduced in game as well? Why not? Members features should expand.
3. Adding scrolls to imbue fremmenik rings. Agreed. Just scrolls could obtained from new minigame, like Shades Of Mort'on, that I suggested before, or maybe Dagganoth Kings, which could introduced as well.
Then again, I and many players suggested third one long ago, maybe for years, nothing good came out of it. Just wishing good luck, if this going to pass to updates.