I have a solution for you... Bring it to Indianapolis just like the Football and Basketball Championships...
You could play the Big time matchups and the Final at Victory Field and play the lesser interest games at The Bart in Bloomington and over at Greyhound Field at the University of Indianapolis (you'd have to add some Rent-a-Bleachers and Port-Potties for up to an additional 700 people down the Right field fence line and bring in some food trucks there but none of that is anything close to an insurmountable obstacle...)... Greyhound Field :
https://www.google.com/local/place/fid/0x886b5b00188b509f:0x3a646b4a29093739/photosphere?iu=https://streetviewpixels-pa.googleapis.com/v1/thumbnail?panoid=gnvg7tlbdTni_Tv6lqPBEQ&cb_client=lu.gallery.gps&w=160&h=106&yaw=1.3819448&pitch=0&thumbfov=100&ik=CAISFmdudmc3dGxiZFRuaV9UdjZscVBCRVE=
Utilizing those two fields along with Victory Field would allow them to play 3 games simultaneously and maybe cut out those same day back to back games.....
Now I may be Way, Way off here because I admittedly don't follow College Baseball to the extent that most of you do so I basically know zip about the format as it is and have probably just embarrassed myself in some major fashion but I'm just trying to throw something out that might work and perhaps be more centrally located and at least slightly better attended...
Indianapolis is pretty good when it comes to putting this type of thing on historically...
If you needed a 4th field you could even send the two lowest seeds up to p u (but Center Grove High School probably has better facilities [actually 2 fields 1 Turf 1 Grass both lighted Seating cap. 1200] and is closer)...
Do with this what you wish (but please don't mock me too much 😉😞, as I've admitted up front that I literally don't have any kind of a clue about the actual normal Championship format [and am too lazy to google it]... 😎🍺
Okay I wasted this much time on this so... Here's this years matchups and format:
Big Ten Releases 2022 Baseball Tournament Bracket
bigten.org
Background (if you can trust Wiki):
en.m.wikipedia.org