Scenario 1: BTC pumps hard to new ATH and demolish alt/BTC pairs. First BTC dominance target is 52.5%, second if it gets to it is aporx. 57% (or 200 W MA - red line). Both targets are good entry point for demolished alt/BTC pairs. BTC.D reverse to new ATL (all time low) and alts pumps like crazy. (similar to 2017/2018 bull run).
Scenario 2: BTC dominance dip under 40%. BTC and alts are pumped al in the same time (alt/BTC charts remains in good shape, they outperformed BTC). Main target area is aprox. 27% of BTC dominance. Or Bitcoin remains sideways while alts pumps, but I will not give this option big chances. BTC always lead the waves.
Scenario 1 looks more probable but this is crypto and you can not take anything as a certainty.