This is just interesting to me.
For preseason I believe you need 1st, 2nd and 3rd string at all position groups to just make it through the preseason. So for example you need ~ 15 OL. Not exactly, but that's just a basic premise of roster construction.
We had very few DL until recently, which Eric from BBI pointed out. I think they are up to 9 now - 3 strings filled. Before the draft we couldn't even field 3 strings - that was scary.
With ~20 DBs on the roster it shows on the macro level how much Betcher's defense is predicated from the secondary. 20 feels like a lot. That 3rd string at the Dime package level with 2 to spare. And out of the 20 DBs I think the only one who was on the roster at the end of the 17 season is Jenkins (that is probably wrong).
Also, I think if they have to free up a spot, with camp in mind, DB is a very likely spot they will do.
Finally I would expect the final roster to be a little long on DB's and a little short elsewhere.
Just something to mull over at a quiet period of the season...