If you want guaranteed combos, then go play SFxT or just TTT2 or hell, even marvel. I love DOA because it does not follow the same guidelines as other fighters. I love that you can react to pressure and turn it around. I love the oki, so do many others.
If tag ever became the standard (DOA is already starting to die out) then it will have even MORE of a struggle against an already established games like SFxT, TTT2 and the possibility of TxSF.
Casuals want guaranteed damage because they lack fundamentals. They feel as " If I can land a TOD combo, then I am good!"
No...it doesn't make you good. Guaranteed combos are not the answer to everything and that will make everything about this game pointless.
No need to learn your character, no need to learn crushes, frame traps, mix ups, etc.
Learn 1 combo and TOD. That is not a game I want to play, if I did - I would go back to UMVC3/ TTT2.