[M T]

No update on who is filling the open coaching vacancy?

Aren't we at a disadvantage with one less coach or does it not matter until the summer?

I agree with you. Until the roster is filled with enough players to have a real practice, the hole in the coaching staff is not critical.

Summer?? 
Coaches have a lot more to do than "have a real practice".  But, other than recruitment, there's not much they can do with the players.

17.4 Basketball. Regulations for computing the basketball playing season are set forth in Bylaw 17.1.
...
17.4.2 Preseason Practice -- On-Court Practice. An institution shall not commence on-court preseason basketball
practice sessions before the date that is 42 days before the date of the institution's first regular-season contest. An institution
shall not engage in more than 30 days of countable athletically related activities before its first regular-season contest. Any
countable athletically related activities (e.g., conditioning, skill-related instruction) that occur within the 42-day period shall
count against the 30 days of countable athletically related activities.
17.4.2.1 Permissible Conditioning Activities. Team conditioning or physical-fitness activities supervised by coaching
staff members may be conducted on or off court but shall not begin prior to the beginning of the institution's academic year
in accordance with Bylaw 17.1.7.2. Such activities shall be limited to eight hours per week.
17.4.2.2 Prohibited Activities. Prior to the start of on-court preseason basketball practice per Bylaw 17.4.2, members
of the institution's coaching staff may not be involved with one or more team members at any location in any of the
following activities except as permitted in Bylaws 17.1.7.2.2 and 17.4.6:
(a) Setting up offensive or defensive alignments;
(b) Chalk talks;
© Discussions of game strategy;
(d) Reviewing game films or videotapes;
(e) Activities using basketball equipment; or
(f) Observing student-athletes in any basketball activities even if such activities are not arranged by the institution's coach.

It could get really interesting if 17.4.2.2(f) were interpreted to include videos taken by others (whether Facebook or YouTube postings or live streams, or last year's game films). Is "student-athletes" to be interpreted as "team members" (if so, why wasn't that said) or whether that actually covers high school players, players at other schools, etc.

[M T]

No update on who is filling the open coaching vacancy?

Aren't we at a disadvantage with one less coach or does it not matter until the summer?

I agree with you. Until the roster is filled with enough players to have a real practice, the hole in the coaching staff is not critical.

Summer?? 
Coaches have a lot more to do than "have a real practice".  But, other than recruitment, there's not much they can do with the players.

17.4 Basketball. Regulations for computing the basketball playing season are set forth in Bylaw 17.1.
...
17.4.2 Preseason Practice -- On-Court Practice. An institution shall not commence on-court preseason basketball
practice sessions before the date that is 42 days before the date of the institution's first regular-season contest. An institution
shall not engage in more than 30 days of countable athletically related activities before its first regular-season contest. Any
countable athletically related activities (e.g., conditioning, skill-related instruction) that occur within the 42-day period shall
count against the 30 days of countable athletically related activities.
17.4.2.1 Permissible Conditioning Activities. Team conditioning or physical-fitness activities supervised by coaching
staff members may be conducted on or off court but shall not begin prior to the beginning of the institution's academic year
in accordance with Bylaw 17.1.7.2. Such activities shall be limited to eight hours per week.
17.4.2.2 Prohibited Activities. Prior to the start of on-court preseason basketball practice per Bylaw 17.4.2, members
of the institution's coaching staff may not be involved with one or more team members at any location in any of the
following activities except as permitted in Bylaws 17.1.7.2.2 and 17.4.6:
(a) Setting up offensive or defensive alignments;
(b) Chalk talks;
© Discussions of game strategy;
(d) Reviewing game films or videotapes;
(e) Activities using basketball equipment; or
(f) Observing student-athletes in any basketball activities even if such activities are not arranged by the institution's coach.

It could get really interesting if 17.4.2.2(f) were interpreted to include videos taken by others (whether Facebook or YouTube postings or live streams, or last year's game films). Is "student-athletes" to be interpreted as "team members" (if so, why wasn't that said) or whether that actually covers high school players, players at other schools, etc.