To avoid slip-offs, some people use one of those thin rubbery cock ring sleeves over the condom at the base of Mr. Happy, or just a cock&ball ring or a blue pill to stay more erect.
I would like to see condom manufacturers get more innovative with a condom securing design, instead of just coming out with endless branding changes and relatively minor tweaks to the product shape or lube. Heck, the penis does have a somewhat natural conical profile to it, and let’s not forget the roll-up-the-shaft effect; those sleeves don’t like getting unrolled in the first place. Maybe a little stretchy loop moulded on the open end to snap over the scrotum, kinda like the shape of the handle on those brown paper grocery bags. Perhaps the Gates foundation will fund a full-on gonch condom to deal with the STD risks. We need options dammit!