This is actually the exact opposite of what the LOST writers did. After season 1 or so, the show focused a lot more on relationships and the growth of its characters.

This ended up being the largest source of complaints about the show. Most of the original viewers watched it because they enjoyed the mysteries and cliffhangers and wanted them answered. However, the show moved completely away from that which led to so many of the complaints that the original questions were not being answered.

Writing about the finale, the NYT's (or may have been Time magazine at the time) TV critic wrote that people who watched the show through the lens of relationships between characters were generally fine with the way the show finished up. While those watching the show for the mysteries hated it, in part for the reason you say.