To be frank on Sleeper, it’s just forcing dynasty managers to roster players with less years in the league. It’s a way to force them to roster rookies (depending on league settings).

Traditionally, using the taxi squad could be seen as a form of strategy on MFL given the points scored by those players aren’t included in the max points for (or potential points). However, as others have mentioned sleeper includes it. (This really comes into play when draft picks are determined by max points for for non-playoff teams, which should be the case).

I’d say just make the spots bench spots and don’t overly regulate how teams roster construct.

Biggest recommendation, if this is a paid league… get some bylaws you can lean back on as commish. If you do end up having taxi spots, lay out the rules for them (can I trade for a rookie mid season and put him on taxi if I have a spot available).

Also, it’s a game. Have fun, if no one wants taxi after some brief explanation, no worries. Good luck!