Well… man I think all that SEO, Statistics, Clicks, Load is a little overblown. Because, honestly almost ever business is actually regionally bound to a specific area. I mean how many companies are ‘nationwide’, or even multi-state, for that matter? Not many. Any effective company or organization will take majority market share in a targeted square mile radius, use that as a model, then broaden.
When targeting customers with an ecommerce, photography portfolio or company site, the actual load will come from their warm-market initally. And their sales, referrals or business should reflect that targeted zone. So that, things you’re referencing like; site page load, browser usage, device usage percentage, etc., will validate changes throughout the site design.
I say this because - Vendors, Merchants, Clients, don’t have this development information. They can get distracted with the “new thing” they heard. Stearing them towards data gathering > equals > analysis > then adjustments, otherwise sites can get way out of control - fast.
Without core numbers, I doubt you will run into any problems with such interactions Now adding background videos, with dynamic content on a store with 500 products with 10 variants each, and then these interactions - yes that’s a problem. Nah you’re good to go!