I'm tracking it but its early on. Looking at this guy:
Adrianza, Pablo C
https://www.whatifsports.com/hbd/Pages/Popups/PlayerRatings.aspx?pid=8139021
When he was drafted, he was headed for a 26/61/63/26/10 for Con/Pwr/vL/vR/Eye based on 20 Col scouting. Had a 49 makeup.
Became DITR same year.
4 seasons after he's at 53/79/70/56/34 and in the last season (his fourth year) he picked up 6 on Con, 6 on vL, 6 on vR, and 4 on Eye. And get this, he's only at a 61 makeup. Thats not bad. He probably is going to gain some more. He's already a very good defensive catcher and is headed for a possible 87/90 PC.
Seems as though from this and a couple of other examples I've followed, that the earlier a player gets DITR from his draft/INT signing year, and the higher his pre-DITR projections, the more likely he's gonna become a viable BL regular (as long as he isn't injured, is played enough, promoted, etc).
As to how to 'cultivate' DITRs, I'm not sure. Seems you can't project a future DITR.
So - really - its just a matter of:
Draft as well as you can.
Get ALL players as much playing time as you can - measured in Games played.
Keep as many active as you can.
Make sure that they are active during the DITR period after the ASG.
And after DITR:
Make sure they start and continue to play in as many games as possible
Promote appropriately
Pair them with good coaches.
Maximize their use in Spring Training.
In other words, do as Tec, Mike, and others say:
Pay attention to your draft. Maintain your minors. Keep good players with good coaching. And finally, forget about what they - will - be. Too much can happen before they reach any projections anyway.