Multiple downloads only for small files; or worsen the navigability!
90 MB of RAM, no open tabs and services. Would not it be better to go back to basics?
① it's getting out the concept of "mini"!
② The intermediate speed is interesting, but it would be better exploited on a separate list, or app (it forces you to reload pages; + is not available offline).
③ Provide a quick send the page to "Opera" (to read full browser).
④ synchronization of the "history" (at least for single device).
⑤ Data (and especially cache) on external SD (excluded "confidential").
⑥ Saving favorite directly from the "list cards" (web icon?).
⑦ Thumbnail for saved pages.