Love this idea. My concern would be in DSFL balancing so I would suggest splitting up the 200 TPE boost to something like 100 at creation and 100 upon being called up to the NSFL or 50/150, depending on what keeps that league balanced. Obviously DSFL balance isn't the top priority here but it should be considered.
Another thing is that OL archetypes are designed to max out the most important attributes around 800-900 TPE with maxing all useful attributes coming around 1200-1300. I believe this is mostly in line with other positions (as safety I maxed out important shit at 850ish and all useful shit at 1050ish) so bringing those down by 200 TPE each (particularly the former) might not be the best idea. Several ways that this could be addressed if desired - like by lowering starting values or raising caps. As far as I can tell, every single OL bot is Athletic archetype so we could dispense with the pretense and just have one OL build with higher caps or tweak the other archetypes' caps to make them more viable.
Another thing is that OL archetypes are designed to max out the most important attributes around 800-900 TPE with maxing all useful attributes coming around 1200-1300. I believe this is mostly in line with other positions (as safety I maxed out important shit at 850ish and all useful shit at 1050ish) so bringing those down by 200 TPE each (particularly the former) might not be the best idea. Several ways that this could be addressed if desired - like by lowering starting values or raising caps. As far as I can tell, every single OL bot is Athletic archetype so we could dispense with the pretense and just have one OL build with higher caps or tweak the other archetypes' caps to make them more viable.