Why was scp-173 in need of re-design?
SCP-173 is a fictional creature from the collaborative writing project known as the SCP Foundation. It is depicted as a statue-like entity that is able to move extremely quickly and attack its prey when unobserved.

The original design of SCP-173 featured a crude and simplistic appearance, which was intentionally left open to interpretation in order to allow readers to imagine the creature in their own way. However, as the SCP Foundation became more popular, it was decided that a more detailed and standardized design was needed to create a more consistent depiction of the creature across different pieces of SCP-related media.

As a result, the SCP Foundation community held a design contest in 2018 to create a new and official design for SCP-173. The winning design featured more detailed and realistic features, such as muscles and tendons, and has since been adopted as the official design for the creature.
You know of any links where I can read up more of this?
If you want to read more about the SCP-173 design contest, you can check out these links:

1. The official announcement of the contest by the SCP Foundation on Twitter: https://twitter.com/scpwiki/status/1539594065070936064
2. A Reddit post that discusses and compares different redesigns of SCP-173: https://www.reddit.com/r/SCP/comments/srrjhn/on_173s_redesigns/
3. Another Reddit post that showcases a popular redesign of SCP-173 by an artist named SunnyClockwork: https://www.reddit.com/r/SCP/comments/ssv7jq/i_personally_believe_that_this_redesign_for/

These links should give you a good overview of the contest and its results.