In my opinion if TW simply made time pass a bit faster it would fix any and all balancing problems with the death feature cause children would grow faster to replace dead members of their clans.
Vanilla uses 21 days/season (84 days/year). The
Pacemaker mod default is 7 days/season (28 days/year) and this change feels perfect to me in my testings.
You still have plenty of time to play your character before he/she ages but the general pacing of the game in much better with children growing and marrying having children of their own faster.
You also don't have to wait for eternity and a half just to take your own first son into your party as a companion which is a plus
Crusader kings has a death rate of about 5% for every character in battle (that can be reduced by perks aswell), a bit higher than currently in bannerlord but it's completely balanced by the faster passing of time.