Even though the DCA strategy is the best strategy for Bitcoin, you cannot consider it the best strategy of all time because you have some of your own strategies that are completely different and innovative compared to this strategy. Regardless of the price this method is recommended for accumulating Bitcoin but during the continuous increase in price you should review the fact that this method increases/decreases the unit price as the holding increases in your portfolio and apply your own strategy accordingly. Therefore you need to apply some of your own strategies in terms of investment that will increase the holding over time and reduce the average price.
Buddy I don't know any other strategy you feel will should apply to our bitcoin investment in other to increase our bitcoin holding apart from the regular strategies which are DCA, buying the dip and lump-sum, but responding to your first paragraph you're wrong about DCA, because DCA strategy is best strategy for bitcoin accumulation and almost everybody out there consider DCA the best strategy of time, because it allows us to buy bitcoin at any fucking time regardless of the market condition since our mindset is long term holding 4 to 10 years or longer. DCA strategy also make us who are investing in bitcoin for long term to be consistence in accumulating bitcoin either on a weekly basis or on a monthly basis with our discretionary income and hold, because you can only reasonable profit from bitcoin when you accumulate a good portion of bitcoin and hold.
DCA is so simple and effective that when newbies ask me: "When is the best time to invest?" I advise them not to rush and not to try to guess where the bottom of the Bitcoin price will be. After all, this is stupid. I always say that you just need to split your free funds into several investments and systematically buy Bitcoin from month to month, without selling it and setting exclusively long-term goals. This strategy allows you not to worry about the price and sleep peacefully.
And even if there are worries about the price, then over time they will disappear, because those who invest according to DCA receive a part of the Bitcoin at excellent prices, and this should relieve any investor - experienced or newbie - from worries.