For now this is going to be definitive version of the deck, I think all the ratios are fine tho I've seen many people who run just 1 copy of Marcus Damon (BT21-086), I think it's too useful of a card to just have it at one copy, I would at least keep it at 2. Also if you don't have the money for ShineGreymon: Ruin Mode (EX4-074) you can replace it for ShineGreymon: Burst Mode (BT17-041). I'm playing one copy of RizeGreymon (X Antibody) (BT9-041) because I feel it can be useful with the focus on the new RizeGreymon (BT21-044) but if you see that it slows down the deck too much you can always just change it to x3 copies of RizeGreymon (BT13-015).
Some other tech choices is that if you favor protection and Marcus free play over aggresion and deletion you can replace ShineGreymon (BT21-045) for ShineGreymon (BT17-039), tho if in general you feel that you just want to see the ShineGreymon (BT12-043) you can always take those two slots out and fill with Yellow Scramble (LM-029) or any other. Also talking about scrambles, if you feel that you have too many copies of Physical Training (P-105) you can take one out and replace it with a scramble, the new option The Champion Ultimate Fighter! (BT21-096) is also a nice tech to have at one copy, but I would only recommend getting one copy and only if you have enough copies of Marcus Damon (BT21-086) because with the other tamers the option is meh.
Remember to punch them beetween the eyes 8)