But I'm more in favor of seeing bitcoin at its top rather than wishing to see the altcoin season because it's more profitable for me if it's bitcoin going further to the next all-time highs.
Yes, I agree with you on this point, I also prefer seeing Bitcoin dominating the market and climbing to new highs instead of seeing the Altecoin season, but in any case I think that the Altecoin season will come even a little late, especially that as you mentioned, we are starting to see some Altcoin actually moving Towards the top.
It happen already one of the example of the altcoin that starting is ETH they break his yearly all time high record for this year not the price he has in 2017 .but still we can now feel the altcoin season unlike for the past 2 years when investors is almost loosing their hope to recover it again . There also traders that the target of ETH for this year or early next year is 1400$ too far but it's possible that we can see it if the trend of altcoin or altcoin season will continue to dominate.
I think the OP is talking about ATH as obviously, then are lagging as far as bitcoin, because we already surpassed like every day our previous ATH. So I don't think that any of the top 10 altcoins will break their previous all time high this year, yes they could have registered higher high that's already an accomplished.
And for them to hit all time high next year next year, bitcoin's dominance should be reduce, it is set to 70%, need to bring it down to at least 40%-50%, just like late 2017 to early 2018, wherein alts set their all time high.