New life for Lingering Potions

Everyone use lingering potions only to craft some arrows so we need to upgrade mechanic of it. My idea is adding (up to 5 times) against update. What is mean? It's mean you can get all time of effect that you have in bottle. For example you through some lingering potion (strength 2:00) at ground and stay in same place. First time you have 2:00, after 0,4s you have 4:00 in the end you have 10:00 and it is maximum time you can get. MORE than 10:00 you CAN'T have. For potion "weakness 1:00" maximum time is 5:00 etc. Pluses and cons It allows to have more time of effect but your opponents can still it. It gives less time for two entities. It's the most expensive potions.