Hypothetical DLC upgrade.

Imagine that in some dlc update, Sea of Sorrow or later that you gain the Hybridcrest, a passive permanent upgrade like the Vesticrest that allows you to select 2 different crests and swap between them using down plus bind. All tools besides the vesticrest which remains the same are swapped between the two and if two crests share red tools then their capacity will remain the same between eachother. Using flea brew on one crest will mean it's used up on both crests, and this leads to the ability to both use up more tools and shell shards by proxy. Tool bind is an exception only restoring the Architect tools with tool bind forcing you to run specific tools assuming you want to run on alternative crests if you want to abuse tool bind(I know this is limiting but it would be even more ridiculous if it restored both crest tools). This idea is admitibly absurdly broken but imagine in this hypothetical but considering how strong the idea is, the swap time is about as long as rune page's start up...maybe. The question here is what combinations would you run and why? Would you go for power, fun, or both? Also optional, but you can list out your thoughts on the idea.

Personally I can think of 3 combinations I would love using. Beast plus Shaman, as those are my favorite crests and they can help compensate for eachother's weaknesses as Beast helps with close range dps and healing while Shaman excels in ranged damage and avoiding/preventing damage with that range and cross stitch. Shaman plus Architect to overdose with Shaman to cover the lack of Shaman's innate healing and murder with tools if necessary. The final one is Architect plus beast both for overdosing with plasmium with the best combat healing crest without easy access to overdosing, and to repair Flintslate with tool bind.