They really need to do something about speed ties.
I like this idea. It gets a little weird with hybrids, but you can use multi-fuse to get more hybrid DNA even if you’re maxed out, so I think it would work. The only possible detriment is that it discourages some fusions even more. For example, rather than using Andrewsarchus for making Andrewtodon, it may be better just to save your Andrewsarchus DNA to help win more speed ties. It also punishes new players, who just don’t have as much DNA for their dinos to start with, and may never catch up.
This is one suggestion that I wouldn’t want to be added to the game. This is because many speedties are between two of the same dino, so those matchups will almost always be resolved on a given turn, usually turn 2 or 3. So if a match is won on turn 2, the player that loses the first speedtie (however that speedtie is decided) gets to attack twice in a row, reaching turn 2 first and winning the matchup. Like for T Rex vs T Rex, Rex A wins the first speedtie and uses Fierce Impact, and Rex B goes second and does the same. Neither is enough to kill the other. But now Rex B is guaranteed to go first, and can use Fierce Strike or Rampage to kill Rex A. So because they lost just one speed tie, Rex B was guaranteed the win (unless Rex A swaps, which often isn’t optimal because whatever they swap to is probably getting hit by a FR). In some ways, this is actually worse than the current speedtie system: instead of each speedtie determining who goes first that turn, the entire matchuo can be decided by whoever wins only one speedtie. It makes winning speedties more important than it really should be, and you still have to come up with some way of deciding who wins the first speedtie anyway.
This is probably how most players assume speed ties are resolved before learning otherwise, myself included. I know people don’t like randomness, but it’s probably objectively the most fair option for resolving speed ties in the long term.