The notion that there will be improvement just because the team lost some close games could be said about every league team and for that matter most college teams.
It's not "the team lost some close games". There are a lot of close games in the conference every year - and on average, teams win 50% of them. One would expect that a team that won a very high or very low percentage of those close games would revert a bit to the mean the following season. Minnesota last year is a good example of where they ended up on the short end of the stick last season and were right in the middle of the pack this season.... last year saw 1-8 in conference games decided by single digits (11%, -3 from 50%), while this year they were 7-6 in those games (54%, +0.5).
Looking across the B1G at conference games decided by single digits:
75% - Maryland (8-4) (2 games above 50%)
67% - Wisconsin (6-3) (+1.5)
63% - Iowa (5-3) (+1)
58% - Northwestern (7-5) (+1)
55% - Purdue (5-4) (+0.5)
54% - Minnesota (7-6) (+0.5)
50% - Michigan (7-7)
45% - PA State (5-6) (-0.5)
45% - Nebraska (5-6) (-0.5)
44% - Illinois (4-5) (-0.5)
42% - Indiana (5-7) (-1)
40% - Michigan State (4-6) (-1)
40% - Ohio State (6-9) (-1.5)
36% - Rutgers (4-7) (-1.5)
10 of 14 conference teams were within a game of winning 50% of their single digit games. Maryland and Wisconsin were slightly above that, and Ohio State and Rutgers were slightly below that.... had we held onto our 5 pt lead with under 2 min left against Wisconsin at MSG, we both would have been within 1 game of 50%, leaving only Maryland and Ohio State as outliers (who played two single digit games against each other, both going to MD). Also of note, conference teams played an average of 11.1 single digit games against conference opponents, putting us right on mean there with 11.
I think this team learned a bit about how the level of play needs to step up in the final 3 minutes. Not only does that help win single digit games... but it can help change a game like @PA State (where we had a 9 point lead with 3:42 left) from a 2 point win to a 10+ point win. Maybe that helps tip 1-2 more games next year in our favor... not expecting it to get us to the postseason, though.