can someone ELI5 the Harris county precinct redistricting process that is currently on-going?

I see a lot going on but I'm unsure about what are the pros and cons of this redistricting.

I got this below text in an email

Under this proposal, Commissioner Tom Ramsey’s Precinct 3 would lose nearly 30 parks, 5 community centers, miles and miles of hike-and-bike trails as well as the responsibility of flood control in West and Northwest Harris County.

This proposal would, in effect, disproportionately affect hundreds of thousands of residents of unincorporated Harris County. Neighborhoods directly affected include:

• Bridgeland
• Cypress Creek Lakes
• MUD 165
• Green Trails
• Kelliwood
• Nottingham
• Cimarron
• West Memorial
• Cinco Ranch
• Ventana Lakes