First, type normally dude, my eyes hurt of reading just one paragraph...
1) That's a good thing, It ads more to the game and makes it more strategic than the simple (like u said) Triple Triad in my opinion.
3) Agree here. But Tetra Master isn't intended to give u a reward or anything if u collect all the cards or something, that's why S-E made it more difficult, to do something other when u r bored, and still be a good challenge.
There is a reason why there is a Tetra Mater online, but no Triple Triad. (!)