As the TCG was discontinued with DM12 in 2006 we missed the last of the 'Holy Fist Sage' Block-Set DM-13 with hostile multi-civ cards as focus.
DM-14 to DM-17 continues with the "new" (back then it was new...) corssgear card type, which is a sort of equippable armor for creatures. I guess that some or most of the TCG players have a glimpse at those sets already some time ago and you most likely now what i refer to.
I would love to see a TCG + Format that incluse all OCG sets up to DM-18 (which is a 'best of' card set). There can be for sure some balancing problems with those sets if you check the official site:
http://www.duelmasters.org/t46-the-official-banned-and-restricted-list-in-ocg (which isn't maybe up to date)
But how should we try this out? I still have some DM-13 and DM-15 irl cards, but how about TCG duelists? Wouldn't it be better to try it out with Online Duelling Platforms first?
Anyway. What do you think? Is this topic even worth to talk about or is there no chance to enhance to TCG Format?