Can the removal of BTC from multipool.us be considered?

The switching speed of the pool doesn't coalesce well with the overall concept because of the overall low hashrate (compared to other pools), and the overall low amount of time that hashrate contributes to directly mining BTC.

The outcome of this is invariably 48h+ mining that achieves no return whatsoever, and a switch is made to an altcoin.

The only way a small(er) pool will be successful in mining BTC is with a dedicated and ongoing hashrate. This quite simply is not a realistic expectation from a profit-switching mining pool.