Gronk was the definition of a unicorn at the TE position. Let's not compare Warren to future 1st ballot HOFer and instead look at what he does offer to the offense.
He had 4 rushing TDs and 218 yards rushing, that's elite for any TE. He is 6'6 250 and a better blocker that will help more in pass protection than most other Non-OL players.
He had 104 receptions that is also elite for any TE and he averaged about 12 ypc. Those are great numbers for any slot receiving option.
Finally, he is comfortable handling snaps, even in the shotgun, and he can complete passes. This allows for a creative play caller to draw up unique short down and distance or goal line plays that use him as a weapon.
These are the things that separate him from Loveland or any other TE the Bears can get later in the draft.
Penn State had a QB who can't get a pass to WRs, no grea WRs anyway, and beat up on some patsies.
The fact that their TE was their #1 weapon does point to his talent, but is also attributable to the rest of their offensive personnel and their typically pedestrian offense in general.
Warren did look like a beast at times, but he would get YAC against slow teams and he doesn't possess some elite physical attributes that project to being a highly successful NFL TE.
It's not that he will suck by any means. It's just that the value of him at 10 over other options later pales in comparison to what you can get drafting other positions. The Bears have a good TE now and can add one in the draft if they want, without using a highly valuable draft pick.
Maybe I am predisposed to thinking TEs are harder to project. Sure Bowers excelled, as we expected. But Kyle Pitts went #4 and is hardly ever heard from. HOF TE's have been drafted in the middle rounds with some regularity.
Hard, hard pass on using #10 on Warren. There are few ways the Bears can go at #10 that would upset me, but that is the clear #1 for me.
EDIT: "Middle rounds" may not be accurate, but after the first round anyway.