I can fill in 1) from my perspective. There's almost no CR is use WITH framelock turned on. Simply because the fps drop is too high, WoW gets (near) unplayable. Especially with healing CR's I always heal with framelock off. The CR has to do too many calculations (especially in AoE situations) where my fps get as low as 12. TuanHA's CR is, as far as I know, never used with framelock. None of them. They works fine without, no delays. I tried KingWOW healing with framelock on but that one, even with dispelling turned off, still dropped my fps in LFR to 20 or even 16. Without framelock it works fine, usually nr. 1 of nr. 2 healing whilst being the lowest ilvl char there. (Note: Atillo76 mentioned that he can use KingWOW with framelock on @ 60fps; but I get about 25% of that and my pc is certainly capable, being an Intel Core i5 2500K with 16GB and AMD 7950).
The only CR I use with framelock on sometimes is using Pure with a DPS toon, but LFR has a lot of AoE fights and you will see a significant drop in fps.
Also it's mentioned before that LFR is the worst thing you can do in regards to fps. 5-man heroics @ framelock @ 60fps is no problem at all, as well as 10-man raids.
The 2) is attacking in healing mode, implemented to regain some mana and/or do some dps. I never use it though.